Number of nX6 arrays with each row a permutation of 1..6 having at least as many downsteps as the preceding row, with rows in lexicographically nondecreasing order.
A222158
Number of nX6 arrays with each row a permutation of 1..6 having at least as many downsteps as the preceding row, with rows in lexicographically nondecreasing order.
Terms
- a(0) =720a(1) =215659a(2) =38778082a(3) =4900249687a(4) =474541614240
External references
- oeis: A222158