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#22 by Bruno Berselli at Mon May 24 07:54:46 EDT 2021
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#21 by Peter Luschny at Mon May 24 07:49:19 EDT 2021
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#20 by Rémy Sigrist at Mon May 24 02:07:10 EDT 2021
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#19 by Rémy Sigrist at Mon May 24 02:06:31 EDT 2021
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| OFFSET
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01,2
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| LINKS
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Rémy Sigrist, <a href="/A343452/b343452.txt">Table of n, a(n) for n = 1..10000</a>
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| STATUS
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approved
editing
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Discussion
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| Mon May 24
| 02:07
| Rémy Sigrist: fixed offset + added b-file
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#18 by Susanna Cuyler at Mon May 24 00:11:17 EDT 2021
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#17 by Rémy Sigrist at Sun May 23 10:16:23 EDT 2021
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#16 by Rémy Sigrist at Sat May 22 10:33:02 EDT 2021
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| EXAMPLE
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A085942(1020) = 1*0 + 0*2 + 2*0 + 0*1 = 0, so 1020 belongs to this sequence.
A085942(1021) = 1*1 + 0*2 + 2*0 + 1*1 = 2, so 1021 does not belong to this sequence.
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#15 by Rémy Sigrist at Sat May 22 10:29:06 EDT 2021
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#14 by Rémy Sigrist at Sat May 22 10:17:05 EDT 2021
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| PROG
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(PARI) is(n) = { my (d=digits(n)); sum (k=1, #d, d[k]*d[#*Colrev(d+1-k])==)==0 }
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| KEYWORD
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nonn,changed,base
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#13 by Rémy Sigrist at Fri May 21 16:20:29 EDT 2021
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| NAME
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Numbers k such that A085942(k) = k0.
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