Number of integer compositions of n with the same length as the absolute value of their alternating sum.

A357183

Number of integer compositions of n with the same length as the absolute value of their alternating sum.

Terms

    a(0) =1a(1) =1a(2) =0a(3) =0a(4) =2a(5) =3a(6) =2a(7) =5a(8) =12a(9) =22a(10) =26a(11) =58a(12) =100a(13) =203a(14) =282a(15) =616a(16) =962a(17) =2045a(18) =2982a(19) =6518a(20) =9858a(21) =21416a(22) =31680a(23) =69623a(24) =104158a(25) =228930a(26) =339978a(27) =751430a(28) =1119668a(29) =2478787

External references