1203410

Appears in sequences

• Number of (n+4) X 6 binary arrays with every 5 X 5 subblock commuting with each horizontal and vertical neighbor 5 X 5 subblock.at n=26A186602
• Numbers m such that sigma(m-1) is a prime.at n=38A270413
• Triangle T(n,k) read by rows giving the coefficients of the matching-generating polynomial of the n X n knight graph (0 <= k <= floor(n^2/2)).at n=24A302241