87864

Appears in sequences

• Bishops on an n X n board (see Robinson paper for details).at n=14A005633
• a(n) = 2*n*(2*n^2 + 1).at n=28A061804
• Irregular triangle read by rows: T(n,k) is the number of endofunctions on [n] whose fourth-smallest component has size exactly k; n >= 0, 0 <= k <= max(0,n-3).at n=23A350276
• a(n) = (6^n+2^n-2*3^n)*(n-1)!/2.at n=4A381219