Number of nX7 nonnegative integer arrays each row and column an ascent sequence (interior element no greater than one plus up-steps preceding it) and the lower right element equal to min(n,7)-1.
A202734
Number of nX7 nonnegative integer arrays each row and column an ascent sequence (interior element no greater than one plus up-steps preceding it) and the lower right element equal to min(n,7)-1.
Terms
- a(0) =1a(1) =32a(2) =2062a(3) =184848a(4) =12219684a(5) =182593546a(6) =51871384
External references
- oeis: A202734