a(n) = ((sqrt(2); sqrt(2))_n + (-sqrt(2); -sqrt(2))_n)/2, where (q; q)_n is the q-Pochhammer symbol.

A276474

a(n) = ((sqrt(2); sqrt(2))_n + (-sqrt(2); -sqrt(2))_n)/2, where (q; q)_n is the q-Pochhammer symbol.

Terms

    a(0) =1a(1) =1a(2) =-1a(3) =-5a(4) =15a(5) =87a(6) =-609a(7) =-8337a(8) =125055a(9) =2695455a(10) =-83559105a(11) =-4212669825a(12) =265398198975

External references