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A319713 Sum of A276150(d) over proper divisors d of n, where A276150 gives the sum of digits in primorial base. 6
0, 1, 1, 2, 1, 4, 1, 4, 3, 5, 1, 7, 1, 4, 6, 6, 1, 8, 1, 10, 5, 6, 1, 11, 4, 5, 6, 9, 1, 15, 1, 10, 7, 7, 6, 15, 1, 6, 6, 16, 1, 15, 1, 13, 13, 8, 1, 19, 3, 13, 8, 12, 1, 17, 8, 17, 7, 9, 1, 24, 1, 4, 13, 12, 7, 17, 1, 12, 9, 17, 1, 23, 1, 5, 15, 11, 7, 17, 1, 24, 12, 7, 1, 28, 9, 6, 10, 19, 1, 27, 6, 15, 5, 8, 8, 25, 1, 12, 13, 24, 1, 19, 1, 20, 21 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

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

Index entries for sequences related to primorial base

FORMULA

a(n) = Sum_{d|n, d<n} A276150(d).

a(n) = A319715(n) - A276150(n).

PROG

(PARI)

A276150(n) = { my(s=0, p=2, d); while(n, d = (n%p); s += d; n = (n-d)/p; p = nextprime(1+p)); (s); };

A319713(n) = sumdiv(n, d, (d<n)*A276150(d));

CROSSREFS

Cf. A276150, A319711, A319715.

Sequence in context: A112350 A321437 A319711 * A063717 A024994 A243329

Adjacent sequences:  A319710 A319711 A319712 * A319714 A319715 A319716

KEYWORD

nonn

AUTHOR

Antti Karttunen, Oct 02 2018

STATUS

approved

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Last modified September 17 01:53 EDT 2021. Contains 347478 sequences. (Running on oeis4.)