

A114003


Rows sums of triangle A114002.


8



1, 3, 3, 5, 3, 7, 3, 7, 5, 7, 3, 11, 3, 7, 7, 9, 3, 11, 3, 11, 7, 7, 3, 15, 5, 7, 7, 11, 3, 15, 3, 11, 7, 7, 7, 17, 3, 7, 7, 15, 3, 15, 3, 11, 11, 7, 3, 19, 5, 11, 7, 11, 3, 15, 7, 15, 7, 7, 3, 23, 3, 7, 11, 13, 7, 15, 3, 11, 7, 15, 3, 23, 3, 7, 11, 11, 7, 15, 3, 19, 9, 7, 3, 23, 7, 7, 7, 15, 3, 23, 7, 11, 7, 7, 7, 23, 3
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OFFSET

1,2


LINKS



FORMULA

a(p) = 3, for primes p.


MATHEMATICA

Table[2 DivisorSigma[0, n]1, {n, 97}] (* Stefano Spezia, Sep 08 2023 *)


PROG

(PARI) N=66; x='x+O('x^N); /* that many terms */
Vec(sum(n=1, N, x^n*(1+x^n)/(1x^n))) /* show terms */ /* Joerg Arndt, May 25 2011 */


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



