Number of 6 X n 0..2 arrays with antidiagonals unimodal and rows and diagonals nondecreasing.

A224004

Number of 6 X n 0..2 arrays with antidiagonals unimodal and rows and diagonals nondecreasing.

Terms

    a(0) =729a(1) =20216a(2) =117386a(3) =388598a(4) =984595a(5) =2160036a(6) =4368458a(7) =8412641a(8) =15703623a(9) =28693082a(10) =51589943a(11) =91524689a(12) =160402902a(13) =277798382a(14) =475383309a(15) =803588211a(16) =1341439640a(17) =2210851797a(18) =3597065144a(19) =5777447600a(20) =9161521721a(21) =14345876103

External references