145160

Appears in sequences

• Sum(prime(k),k=1..n)^2-1.at n=15A092780
• a(n) = number of ways to dispose two pawns on a chessboard of size n X n (two dispositions are equivalent if one can be rotated or reflected to give the other one).at n=39A141582
• Number of length 1+3 0..n arrays with no disjoint pairs in any consecutive four terms having the same sum.at n=18A247727
• Triangle read by rows T(n, k) is the number of permutations on n elements whose square has k descents, for n >= 1 and 0 <= k <= n-1.at n=40A373691