OFFSET
0,3
COMMENTS
FORMULA
Sum(en[j],j=1..M(n)]), with the n-th multiset defining partition in A-St order written as (1^en[1],2^en[2],...,M^en[M]), with M=M(n) its largest part, and positive, nonincreasing exponents en[1]>=en[2]>=...>=en[M]>=1. a(0)=0 from the empty partition defining the empty multiset.
EXAMPLE
Read as array:
0;
1;
2;
2,3;
3,4;
4,5;
3,4,5,6;
4,5,6,7;
5,6,7,8;
5,6,6,7,8,9;
4, 6, 7, 7, 8, 9, 10;
...,
linking (for row number n>=0) to the number of parts of the corresponding partitions of n.
CROSSREFS
KEYWORD
nonn,easy,tabf
AUTHOR
Wolfdieter Lang, Mar 14 2011
STATUS
approved