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

A192923

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

Terms

    a(0) =0a(1) =1a(2) =2a(3) =4a(4) =9a(5) =19a(6) =42a(7) =91a(8) =200a(9) =437a(10) =959a(11) =2101a(12) =4609a(13) =10106a(14) =22168a(15) =48620a(16) =106649a(17) =233928a(18) =513126a(19) =1125541a(20) =2468901a(21) =5415578a(22) =11879209a(23) =26057330a(24) =57157443a(25) =125376341a(26) =275016369a(27) =603255761

External references