Number of 4Xn 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302530
Number of 4Xn 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =23a(2) =115a(3) =168a(4) =539a(5) =1977a(6) =5942a(7) =16733a(8) =49219a(9) =159516a(10) =493401a(11) =1460747a(12) =4425266a(13) =13722727a(14) =42140581a(15) =127606254a(16) =388561273a(17) =1192422089a(18) =3648989388a(19) =11120119943a(20) =33934405093a(21) =103799531930a(22) =317293759665a(23) =968655453293
External references
- oeis: A302530