Number of nX3 arrays containing 3 copies of 0..n-1 with every element equal to or 1 greater than any west or northeast neighbors modulo n and the upper left element equal to 0.

A267737

Number of nX3 arrays containing 3 copies of 0..n-1 with every element equal to or 1 greater than any west or northeast neighbors modulo n and the upper left element equal to 0.

Terms

    a(0) =1a(1) =10a(2) =17a(3) =26a(4) =45a(5) =82a(6) =157a(7) =306a(8) =605a(9) =1202a(10) =2397a(11) =4786a(12) =9565a(13) =19122a(14) =38237a(15) =76466a(16) =152925a(17) =305842a(18) =611677a(19) =1223346a(20) =2446685a(21) =4893362a(22) =9786717a(23) =19573426a(24) =39146845a(25) =78293682a(26) =156587357a(27) =313174706a(28) =626349405a(29) =1252698802

External references