Euler transform of powers of 6.

Terms

a(0) =1a(1) =6a(2) =57a(3) =488a(4) =4140a(5) =34128a(6) =276792a(7) =2208312a(8) =17389710a(9) =135354340a(10) =1042965042a(11) =7964675400a(12) =60337114778a(13) =453795079932