The sequence f(1), f(2), ... as defined in A067836.

A071290

The sequence f(1), f(2), ... as defined in A067836.

Terms

    a(0) =1a(1) =2a(2) =6a(3) =30a(4) =210a(5) =2730a(6) =30030a(7) =510510a(8) =9699690a(9) =223092870a(10) =8254436190a(11) =602573841870

External references