Number of 5 X n 0..2 arrays with horizontal differences mod 3 never 1, vertical differences mod 3 never -1, and rows and columns lexicographically nondecreasing.

A229448

Number of 5 X n 0..2 arrays with horizontal differences mod 3 never 1, vertical differences mod 3 never -1, and rows and columns lexicographically nondecreasing.

Terms

    a(0) =17a(1) =47a(2) =128a(3) =324a(4) =753a(5) =1609a(6) =3184a(7) =5890a(8) =10281a(9) =17075a(10) =27176a(11) =41696a(12) =61977a(13) =89613a(14) =126472a(15) =174718a(16) =236833a(17) =315639a(18) =414320a(19) =536444a(20) =685985a(21) =867345a(22) =1085376a(23) =1345402a(24) =1653241a(25) =2015227a(26) =2438232a(27) =2929688a(28) =3497609a(29) =4150613

External references