Number of integer sequences of length n+1 with sum zero and sum of absolute values 12.

A157055

Number of integer sequences of length n+1 with sum zero and sum of absolute values 12.

Terms

    a(0) =2a(1) =36a(2) =362a(3) =2570a(4) =14240a(5) =65226a(6) =256508a(7) =889716a(8) =2777370a(9) =7925720a(10) =20934474a(11) =51697802a(12) =120353324a(13) =265953170a(14) =561075720a(15) =1135620536a(16) =2214405618a(17) =4175000796a(18) =7634582090a(19) =13577591370a(20) =23539760552a(21) =39868752506a(22) =66087441092a(23) =107392877100a(24) =171332460650a(25) =268708978512

External references