Number of n X 5 0..1 arrays with every element equal to 0, 1 or 3 horizontally or vertically adjacent elements, with upper left element zero.

A301538

Number of n X 5 0..1 arrays with every element equal to 0, 1 or 3 horizontally or vertically adjacent elements, with upper left element zero.

Terms

    a(0) =8a(1) =21a(2) =61a(3) =212a(4) =658a(5) =2417a(6) =9037a(7) =33526a(8) =125626a(9) =477972a(10) =1824213a(11) =6971325a(12) =26702279a(13) =102479158a(14) =393541270a(15) =1511848952a(16) =5810405859a(17) =22336911663a(18) =85879249631a(19) =330208289450

External references