54750

Appears in sequences

• a(n+1) = a(n) + (if a(n) is odd then (next odd square) else (next even square)), a(0) = 1.at n=35A116955
• a(n) = 36*n^2 - 6.at n=38A158462
• Number of n X 7 0..1 arrays with every element unequal to 0, 1 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=10A299594
• Triangle T(n,k) read by rows: the number of traceless symmetric binary n X n matrices with 2k one's and no all-1 2 X 2 submatrix.at n=34A352472