T(n,k) = Number of n X k 0..3 arrays with some element plus some horizontally, antidiagonally or vertically adjacent neighbor totalling three exactly once.
A269152
T(n,k) = Number of n X k 0..3 arrays with some element plus some horizontally, antidiagonally or vertically adjacent neighbor totalling three exactly once.
Terms
- a(0) =0a(1) =4a(2) =4a(3) =24a(4) =80a(5) =24a(6) =108a(7) =768a(8) =768a(9) =108a(10) =432a(11) =6224a(12) =13904a(13) =6224a(14) =432a(15) =1620a(16) =46464a(17) =220968a(18) =220968a(19) =46464a(20) =1620a(21) =5832a(22) =330192a(23) =3277728a(24) =7002040a(25) =3277728a(26) =330192a(27) =5832a(28) =20412a(29) =2270592
External references
- oeis: A269152