Number of (7+1) X (n+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.
A250905
Number of (7+1) X (n+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.
Terms
- a(0) =40357a(1) =144442a(2) =412006a(3) =1052787a(4) =2553537a(5) =6060594a(6) =14283986a(7) =33622407a(8) =79146865a(9) =186303082a(10) =438524102a(11) =1032952851a(12) =2438864985a(13) =5785894874a(14) =13834474066a(15) =33456261815a(16) =82124660857a(17) =205298412354a(18) =524006897206
External references
- oeis: A250905