Number of nX3 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 2 or 3 1s.
A295347
Number of nX3 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 2 or 3 1s.
Terms
- a(0) =5a(1) =20a(2) =76a(3) =299a(4) =1198a(5) =4775a(6) =19214a(7) =77650a(8) =314916a(9) =1281050a(10) =5224082a(11) =21344769a(12) =87348360a(13) =357898094a(14) =1467894633a(15) =6025215866a(16) =24746954977a(17) =101691771957a(18) =418041974157
External references
- oeis: A295347