Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

A299677

Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =4a(1) =13a(2) =20a(3) =45a(4) =147a(5) =506a(6) =1561a(7) =5017a(8) =16429a(9) =53365a(10) =172859a(11) =562276a(12) =1828820a(13) =5943264a(14) =19318649a(15) =62811656a(16) =204197935a(17) =663816782a(18) =2158064264a(19) =7015860029a(20) =22808258862a(21) =74148897744a(22) =241056311862a(23) =783667226084

External references