a(n) = 7*binomial(11*n+7,n)/(11*n+7).

A234873

a(n) = 7*binomial(11*n+7,n)/(11*n+7).

Terms

    a(0) =1a(1) =7a(2) =98a(3) =1729a(4) =34300a(5) =730597a(6) =16323468a(7) =377447148a(8) =8956384437a(9) =216859117475

External references