68551

Appears in sequences

• Number of lower triangles of an n X n integer array with all row and column sums zero and all row and column sums of squares <=32.at n=4A195888
• T(n,k) = Number of lower triangles of an n X n integer array with all row and column sums zero and all row and column sums of squares <= 2k^2.at n=32A195892
• Number of lower triangles of a 5X5 integer array with all row and column sums zero and all row and column sums of squares <= 2n^2.at n=3A195893
• Number of happy numbers without zeros and with digits in nondecreasing order <= 10^n.at n=13A219667
• Number of ordered set partitions of {1,2,...,n} such that no part has the same size as any of its two immediate predecessors.at n=9A261961