Number of ways to remove n oranges from an infinite stack of oranges whose m-th layer is an m X (m+5) rectangle.

A274599

Number of ways to remove n oranges from an infinite stack of oranges whose m-th layer is an m X (m+5) rectangle.

Terms

    a(0) =1a(1) =6a(2) =19a(3) =56a(4) =152a(5) =378a(6) =898a(7) =2042a(8) =4476a(9) =9526a(10) =19740a(11) =39978a(12) =79342a(13) =154650a(14) =296489a(15) =560022a(16) =1043404a(17) =1919708a(18) =3491081a(19) =6280514a(20) =11185375a(21) =19734004a(22) =34509347a(23) =59847208a(24) =102976946a(25) =175877782a(26) =298279841a(27) =502496682a(28) =841161007a(29) =1399559416

External references