A318833 - OEIS

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A318833

a(n) = n + A023900(n).

7

2, 1, 1, 3, 1, 8, 1, 7, 7, 14, 1, 14, 1, 20, 23, 15, 1, 20, 1, 24, 33, 32, 1, 26, 21, 38, 25, 34, 1, 22, 1, 31, 53, 50, 59, 38, 1, 56, 63, 44, 1, 30, 1, 54, 53, 68, 1, 50, 43, 54, 83, 64, 1, 56, 95, 62, 93, 86, 1, 52, 1, 92, 75, 63, 113, 46, 1, 84, 113, 46, 1, 74, 1, 110, 83, 94, 137, 54, 1, 84, 79, 122, 1, 72, 149, 128, 143, 98, 1, 82

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OFFSET

1,1

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..65537

FORMULA

a(n) = n + A023900(n).

PROG

(PARI)

A023900(n) = factorback(apply(p -> 1-p, factor(n)[, 1]));

A318833(n) = (n+A023900(n));

CROSSREFS

Cf. A023900, A318841.

Sequence in context: A339615 A003687 A104575 * A173937 A046223 A338398

Adjacent sequences: A318830 A318831 A318832 * A318834 A318835 A318836

KEYWORD

nonn

AUTHOR

Antti Karttunen, Sep 16 2018

STATUS

approved