Number of ways to remove n oranges from an infinite stack of oranges whose m-th layer is an m X (m+2) rectangle.

A274596

Number of ways to remove n oranges from an infinite stack of oranges whose m-th layer is an m X (m+2) rectangle.

Terms

    a(0) =1a(1) =3a(2) =7a(3) =19a(4) =44a(5) =98a(6) =213a(7) =448a(8) =918a(9) =1832a(10) =3584a(11) =6882a(12) =13012a(13) =24220a(14) =44480a(15) =80678a(16) =144697a(17) =256775a(18) =451305a(19) =786008a(20) =1357414a(21) =2325540a(22) =3954366a(23) =6676369a(24) =11196599a(25) =18657454a(26) =30901434a(27) =50884452a(28) =83327163a(29) =135733071

External references