Number of n X 5 nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 2 and every value increasing by 0 or 1 with every step right, diagonally se or down.
A252980
Number of n X 5 nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 2 and every value increasing by 0 or 1 with every step right, diagonally se or down.
Terms
- a(0) =6a(1) =41a(2) =266a(3) =1247a(4) =4657a(5) =67537a(6) =433401a(7) =1481460a(8) =3510600a(9) =6637020a(10) =10878576a(11) =16235268a(12) =22707096a(13) =30294060a(14) =38996160a(15) =48813396a(16) =59745768a(17) =71793276a(18) =84955920a(19) =99233700a(20) =114626616a(21) =131134668a(22) =148757856a(23) =167496180a(24) =187349640a(25) =208318236
External references
- oeis: A252980