cp's OEIS Frontend

A216641 Number of nondecreasing arrays of n 1..n integers with the sum of their 3rd powers equal to sum(i^3,i=1..n).

%I A216641 #5 Jun 02 2025 08:07:59
%S A216641 1,1,1,1,1,2,2,6,12,30,76,224,597,1801,5469,16958,53308,169872,548344,
%T A216641 1791949,5915441,19700851,66148464,223751776,761919971,2610778118,
%U A216641 8998428171,31179152130,108577507149,379879051198
%N A216641 Number of nondecreasing arrays of n 1..n integers with the sum of their 3rd powers equal to sum(i^3,i=1..n).
%C A216641 Column 3 of A216645
%e A216641 All solutions for n=8
%e A216641 ..1....3....1....2....2....1
%e A216641 ..1....4....2....2....2....2
%e A216641 ..4....5....2....2....4....3
%e A216641 ..5....6....5....3....4....4
%e A216641 ..5....6....5....6....4....5
%e A216641 ..5....6....7....7....4....6
%e A216641 ..7....6....7....7....8....7
%e A216641 ..8....6....7....7....8....8
%K A216641 nonn
%O A216641 1,6
%A A216641 _R. H. Hardin_ Sep 11 2012