Number of nX2 arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 5.
A264657
Number of nX2 arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 5.
Terms
- a(0) =1a(1) =3a(2) =8a(3) =38a(4) =223a(5) =2412a(6) =26400a(7) =371328a(8) =5636096a(9) =92242944a(10) =2278149120a(11) =57145347072
External references
- oeis: A264657