a(0)=1, a(1)=7, a(n)=15*a(n-1)-49*a(n-2) for n>1.

A165322

a(0)=1, a(1)=7, a(n)=15*a(n-1)-49*a(n-2) for n>1.

Terms

    a(0) =1a(1) =7a(2) =56a(3) =497a(4) =4711a(5) =46312a(6) =463841a(7) =4688327a(8) =47596696a(9) =484222417a(10) =4931098151a(11) =50239573832a(12) =511969798081

External references