a(n) = binomial(n + 8, 8)*7^n .

A170932

a(n) = binomial(n + 8, 8)*7^n .

Terms

    a(0) =1a(1) =63a(2) =2205a(3) =56595a(4) =1188495a(5) =21630609a(6) =353299947a(7) =5299499205a(8) =74192988870a(9) =980996186170

External references