Number of 4Xn 0..1 arrays with every element equal to 0, 1, 2 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302417
Number of 4Xn 0..1 arrays with every element equal to 0, 1, 2 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =81a(2) =120a(3) =259a(4) =698a(5) =1650a(6) =3655a(7) =8544a(8) =20246a(9) =47274a(10) =110507a(11) =259419a(12) =607197a(13) =1420291a(14) =3328378a(15) =7799749a(16) =18264688a(17) =42776207a(18) =100206573a(19) =234721284a(20) =549779626a(21) =1287794595a(22) =3016512620a(23) =7065696896a(24) =16550376724a(25) =38767164617a(26) =90806809133
External references
- oeis: A302417