Number of nX7 0..1 arrays with every element equal to 0, 1, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302514
Number of nX7 0..1 arrays with every element equal to 0, 1, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =21a(1) =23a(2) =118a(3) =235a(4) =689a(5) =1784a(6) =4558a(7) =12324a(8) =32336a(9) =84536a(10) =223968a(11) =588744a(12) =1548844a(13) =4083686a(14) =10742086a(15) =28288776a(16) =74511660a(17) =196104792a(18) =516398498a(19) =1359816012a(20) =3579887214a(21) =9426059034a(22) =24819072446a(23) =65345909914a(24) =172055547718a(25) =453015967754
External references
- oeis: A302514