cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A259155 Sum of all values v whose pi-based arithmetic derivative equals n.

Original entry on oeis.org

1, 2, 3, 5, 11, 11, 13, 23, 19, 23, 29, 41, 54, 41, 43, 61, 53, 59, 61, 82, 83, 95, 79, 83, 89, 123, 122, 103, 107, 109, 138, 161, 167, 155, 139, 187, 151, 190, 163, 167, 173, 260, 181, 191, 260, 197, 199, 211, 223, 285, 229, 233, 263, 333, 278, 308, 312, 269
Offset: 0

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Author

Alois P. Heinz, Jun 19 2015

Keywords

Crossrefs

Row sums of A259153.

Formula

a(n) = Sum_{v>=0, A258851(v)=n} v.
a(n) = Sum_{k=1..A259154(n)} A259153(n,k).
a(n) >= A000040(n) for n>0.