Constant term in the reduction of the polynomial (x+3)^n by x^2 -> x+1.

A192240

Constant term in the reduction of the polynomial (x+3)^n by x^2 -> x+1.

Terms

    a(0) =1a(1) =3a(2) =10a(3) =37a(4) =149a(5) =636a(6) =2813a(7) =12695a(8) =57922a(9) =265809a(10) =1223521a(11) =5640748a(12) =26026505a(13) =120137307a(14) =554669594a(15) =2561176781a(16) =11826871933a(17) =54615158940a(18) =252210521317

External references