Generalized Fibonacci numbers.

Terms

a(0) =1a(1) =1a(2) =8a(3) =57a(4) =407a(5) =2906a(6) =20749a(7) =148149a(8) =1057792a(9) =7552693a(10) =53926643a(11) =385039194a(12) =2749201001a(13) =19629446201a(14) =140155324408