Number of nX3 0..1 arrays with every element equal to 0, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302207
Number of nX3 0..1 arrays with every element equal to 0, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =11a(2) =16a(3) =47a(4) =147a(5) =386a(6) =1065a(7) =3063a(8) =8624a(9) =24219a(10) =68527a(11) =193946a(12) =547869a(13) =1548531a(14) =4380048a(15) =12385479a(16) =35018011a(17) =99025330a(18) =280031137a(19) =791849343a(20) =2239169200a(21) =6331964803a(22) =17905479095a(23) =50632882698a(24) =143179634869a(25) =404883140379
External references
- oeis: A302207