Denominators of r(n) = r(n-1) + r(n-2) + B_(n-2), where B_n is the n-th Bernoulli number A027641(n)/A027642(n).

A228151

Denominators of r(n) = r(n-1) + r(n-2) + B_(n-2), where B_n is the n-th Bernoulli number A027641(n)/A027642(n).

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =6a(6) =5a(7) =30a(8) =105a(9) =70a(10) =35a(11) =70a(12) =231a(13) =2310a(14) =143a(15) =30030a(16) =15015a(17) =10010a(18) =85085a(19) =170170a(20) =373065a(21) =25194a(22) =323323a(23) =1939938a(24) =22309287a(25) =14872858a(26) =168245a(27) =74364290a(28) =15935205a(29) =223092870

External references