Number of n X 4 0..1 arrays with every element equal to 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

A298163

Number of n X 4 0..1 arrays with every element equal to 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =0a(1) =2a(2) =2a(3) =4a(4) =6a(5) =11a(6) =18a(7) =31a(8) =53a(9) =91a(10) =156a(11) =269a(12) =464a(13) =802a(14) =1389a(15) =2410a(16) =4188a(17) =7290a(18) =12709a(19) =22188a(20) =38790a(21) =67902a(22) =119006a(23) =208808a(24) =366763a(25) =644841a(26) =1134799a(27) =1998740a(28) =3523204a(29) =6214955

External references