OFFSET
0,3
LINKS
Andrew Howroyd, Table of n, a(n) for n = 0..2713 (rows 0..20)
S.-H. Cha, E. G. DuCasse, and L. V. Quintas, Graph Invariants Based on the Divides Relation and Ordered by Prime Signatures, arxiv:1405.5283 [math.NT], 2014.
EXAMPLE
Triangle T(n,k) begins:
0;
1;
2, 4;
3, 7, 12;
4, 10, 12, 20, 32;
5, 13, 17, 28, 33, 52, 80;
6, 16, 22, 24, 36, 46, 54, 72, 84, 128, 192;
...
PROG
(PARI) \\ here b(n) is A062799.
b(n)={sumdiv(n, d, omega(d))}
N(sig)={prod(k=1, #sig, prime(k)^sig[k])}
Row(n)={apply(s->b(N(s)), [Vecrev(p) | p<-partitions(n)])}
{ for(n=0, 6, print(Row(n))) } \\ Andrew Howroyd, Apr 25 2020
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Sung-Hyuk Cha, Mar 07 2014
EXTENSIONS
Offset changed and terms a(64) and beyond from Andrew Howroyd, Apr 25 2020
STATUS
approved