Number of n X 1 arrays of permutations of 0..n*1-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 3.

A264557

Number of n X 1 arrays of permutations of 0..n*1-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 3.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =8a(6) =24a(7) =72a(8) =216a(9) =864a(10) =3456a(11) =13824a(12) =69120a(13) =345600a(14) =1728000a(15) =10368000a(16) =62208000a(17) =373248000a(18) =2612736000a(19) =18289152000a(20) =128024064000

External references