Number of n X 1 arrays of permutations of 0..n*1-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 4.

A264635

Number of n X 1 arrays of permutations of 0..n*1-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 4.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =4a(6) =8a(7) =16a(8) =48a(9) =144a(10) =432a(11) =1296a(12) =5184a(13) =20736a(14) =82944a(15) =331776a(16) =1658880a(17) =8294400a(18) =41472000a(19) =207360000a(20) =1244160000a(21) =7464960000a(22) =44789760000a(23) =268738560000

External references