Number of nX3 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 4 neighboring 1s.
A297715
Number of nX3 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 4 neighboring 1s.
Terms
- a(0) =4a(1) =34a(2) =145a(3) =747a(4) =4090a(5) =21116a(6) =110551a(7) =582755a(8) =3055652a(9) =16036278a(10) =84225551a(11) =442157803a(12) =2321279598a(13) =12187515422a(14) =63986012963a(15) =335934438957
External references
- oeis: A297715