Number of nX4 0..1 arrays with every element equal to 0, 1, 2 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302619
Number of nX4 0..1 arrays with every element equal to 0, 1, 2 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =37a(2) =45a(3) =130a(4) =367a(5) =917a(6) =2533a(7) =6871a(8) =18334a(9) =49596a(10) =133871a(11) =360493a(12) =972318a(13) =2622309a(14) =7069651a(15) =19062876a(16) =51403186a(17) =138601138a(18) =373723944a(19) =1007717328a(20) =2717208445a(21) =7326688182a(22) =19755736142a(23) =53269455264a(24) =143635996311a(25) =387300855495
External references
- oeis: A302619