Coefficient of x in the reduction by x^2 -> x+1 of the polynomial p(n,x) defined below in Comments.

A192384

Coefficient of x in the reduction by x^2 -> x+1 of the polynomial p(n,x) defined below in Comments.

Terms

    a(0) =0a(1) =2a(2) =4a(3) =24a(4) =72a(5) =312a(6) =1088a(7) =4288a(8) =15744a(9) =60192a(10) =224832a(11) =851072a(12) =3197056a(13) =12062592a(14) =45398016a(15) =171104256a(16) =644354048a(17) =2427699712a(18) =9144222720a(19) =34448209920a(20) =129761986560a(21) =488821962752

External references