Number of nX4 0..1 arrays with every element equal to 0, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A300601
Number of nX4 0..1 arrays with every element equal to 0, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =10a(2) =18a(3) =42a(4) =141a(5) =394a(6) =1397a(7) =4808a(8) =16894a(9) =58420a(10) =204550a(11) =717275a(12) =2514452a(13) =8832464a(14) =31025029a(15) =109010028a(16) =382964169a(17) =1345726769a(18) =4728783025a(19) =16617070485a(20) =58394286019a(21) =205206038686a(22) =721123780407
External references
- oeis: A300601