Number of 4 X n 0..1 arrays with every element equal to 0, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

A303326

Number of 4 X n 0..1 arrays with every element equal to 0, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Terms

    a(0) =8a(1) =2a(2) =8a(3) =2a(4) =12a(5) =10a(6) =46a(7) =50a(8) =204a(9) =290a(10) =1034a(11) =1682a(12) =5458a(13) =9802a(14) =29582a(15) =57122a(16) =163166a(17) =332930a(18) =911976a(19) =1940450a(20) =5149146a(21) =11309770a(22) =29300080a(23) =65918162a(24) =167721900a(25) =384199202a(26) =964447184a(27) =2239277042a(28) =5564863708a(29) =13051463050

External references