A341518 - OEIS

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A341518

Numbers k such that the primorial base representation of their arithmetic derivative does not contain digits larger than 1.

0, 1, 2, 3, 5, 7, 9, 10, 11, 13, 14, 15, 16, 17, 19, 23, 28, 29, 30, 31, 37, 41, 43, 45, 47, 53, 58, 59, 61, 62, 67, 71, 73, 74, 79, 83, 87, 89, 97, 101, 103, 107, 108, 109, 112, 113, 127, 131, 136, 137, 139, 149, 151, 155, 157, 161, 163, 167, 173, 179, 181, 189, 191, 193, 197, 198, 199, 203, 209, 210, 211, 212, 217

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OFFSET

1,3

COMMENTS

Numbers k for which A328390(k) <= 1, numbers k such that A003415(k) is in A276156.

Numbers k such that A327859(k) = A276086(A003415(k)) is squarefree.

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..20000

Index entries for sequences related to primorial base

FORMULA

For all n > 2, A328390(a(n)) = A328114(A003415(a(n))) = 1.

PROG