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editing
approved
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Revision History for A329623
(Bold, blue-underlined text is an addition; faded, red-underlined text is aShowing entries 1-10 | older changes
The absolute value of the difference between n and A053392(n), the concatenation of the sums of every pair of consecutive digits of n.
(history; published version)
(history; published version)
MAPLE
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approved
editing
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approved
PROG
(PARI) A329623(n)=abs(n-A053393A053392(n)) \\ M. F. Hasler, Dec 02 2019
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approved
editing
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editing
approved
EXAMPLE
a(9) = 9 as A053392(09) = 0 and | 9 - 0 | = 9.
PROG
(PARI) A329623(n)=abs(n-A053393(n)) \\ M. F. Hasler, Dec 02 2019
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approved
editing
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proposed
approved
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editing
proposed
COMMENTS
As A040115 forms the basis of an iterative sequence leading to A329200 and A329201, this sequence forms the basis of a similar sequence A329624. As the concatenation of the digit sum can lead to a value larger than the original term we must take the absolute value of the difference to ensure subsequent terms are always positive. The largest value in the first 10000 terms is a(9991) = 171819.
LINKS
Scott R. Shannon, <a href="/A329623/b329623.txt">Table of n, a(n) for n = 0..10000</a>
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approved
editing
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proposed
approved