Number of n X 5 nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 3 and every value within 3 of its king move distance from the upper left and every value increasing by 0 or 1 with every step right, diagonally se or down.
A253001
Number of n X 5 nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 3 and every value within 3 of its king move distance from the upper left and every value increasing by 0 or 1 with every step right, diagonally se or down.
Terms
- a(0) =4a(1) =14a(2) =34a(3) =69a(4) =69a(5) =3072a(6) =39758a(7) =228484a(8) =775433a(9) =1932763a(10) =3965261a(11) =7139167a(12) =11720721a(13) =17976163a(14) =26171733a(15) =36573671a(16) =49448217a(17) =65061611a(18) =83680093a(19) =105569903a(20) =130997281a(21) =160228467a(22) =193529701a(23) =231167223a(24) =273407273a(25) =320516091a(26) =372759917
External references
- oeis: A253001