Number of nX7 binary arrays with each 1 adjacent to exactly one 1 vertically and one 1 horizontally.

A183339

Number of nX7 binary arrays with each 1 adjacent to exactly one 1 vertically and one 1 horizontally.

Terms

    a(0) =1a(1) =13a(2) =37a(3) =97a(4) =407a(5) =1397a(6) =4531a(7) =16029a(8) =55471a(9) =188735a(10) =651517a(11) =2246015a(12) =7712899a(13) =26544813a(14) =91374201a(15) =314289321a(16) =1081352347a(17) =3720918175a(18) =12801778315a(19) =44045879629a(20) =151549077973a(21) =521423489151

External references