Numbers of vectors with 2*n integers such that each element is either 1 or -1, and their sum > n.

A226197

Numbers of vectors with 2*n integers such that each element is either 1 or -1, and their sum > n.

Terms

    a(0) =1a(1) =1a(2) =7a(3) =9a(4) =56a(5) =79a(6) =470a(7) =697a(8) =4048a(9) =6196a(10) =35443a(11) =55455a(12) =313912a(13) =499178a(14) =2804012a(15) =4514873a(16) =25211936a(17) =40999516a(18) =227881004a(19) =373585604a(20) =2068564064a(21) =3414035527a(22) =18844224462a(23) =31278197839a(24) =172186125456a(25) =287191809724

External references