1378241

Appears in sequences

• a(n) = n^5 - n^2*(n^2 - 1)/2.at n=17A100242
• Number of nX5 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly one mistake.at n=6A278673
• Number of nX7 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly one mistake.at n=4A278675