Number of ways to remove n oranges from an infinite stack of oranges whose m-th layer is an m X (m+4) rectangle.

A274598

Number of ways to remove n oranges from an infinite stack of oranges whose m-th layer is an m X (m+4) rectangle.

Terms

    a(0) =1a(1) =5a(2) =14a(3) =40a(4) =103a(5) =247a(6) =567a(7) =1252a(8) =2668a(9) =5539a(10) =11214a(11) =22247a(12) =43300a(13) =82871a(14) =156152a(15) =290202a(16) =532430a(17) =965395a(18) =1731351a(19) =3073660a(20) =5404984a(21) =9420512a(22) =16282463a(23) =27922063a(24) =47527430a(25) =80331385a(26) =134873275a(27) =225015223a(28) =373141724a(29) =615224276

External references