459420

Appears in sequences

• Number of ways to place 2 nonattacking wazirs on an n X n board.at n=30A172225
• T(n,k)=Number of nXk 0..3 arrays with no element equal to zero plus the sum of elements to its left or two plus the sum of the elements above it or two plus the sum of the elements diagonally to its northwest, modulo 4.at n=38A240295
• Number of 3Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or two plus the sum of the elements above it or two plus the sum of the elements diagonally to its northwest, modulo 4.at n=6A240297
• Expansion of e.g.f. exp( 1/(1-2*x)^(5/2) - 1 ).at n=5A380213