OFFSET
0,4
LINKS
FORMULA
a(n) = n * A069905(n).
EXAMPLE
a(9) = 63 since we have the partitions (1,1,7), (1,2,6), (1,3,5), (1,4,4), (2,2,5), (2,3,4) and (3,3,3). Since the parts in each partition sum to 9 and we have 7 partitions, a(9) = 9*7 = 63.
PROG
(PARI) a(n) = floor((n^2+6)/12) * n \\ Winston de Greef, Oct 02 2023
CROSSREFS
KEYWORD
nonn
AUTHOR
Wesley Ivan Hurt, Dec 10 2021
STATUS
approved