a(n) = Fibonacci(n)*A002652(n) for n>=1, with a(0)=1, where A002652 lists the coefficients in theta series of Kleinian lattice Z[(-1+sqrt(-7))/2].

A205975

a(n) = Fibonacci(n)*A002652(n) for n>=1, with a(0)=1, where A002652 lists the coefficients in theta series of Kleinian lattice Z[(-1+sqrt(-7))/2].

Terms

    a(0) =1a(1) =2a(2) =4a(3) =0a(4) =18a(5) =0a(6) =0a(7) =26a(8) =168a(9) =68a(10) =0a(11) =356a(12) =0a(13) =0a(14) =1508a(15) =0a(16) =9870a(17) =0a(18) =10336a(19) =0a(20) =0a(21) =0a(22) =141688a(23) =114628a(24) =0a(25) =150050a(26) =0a(27) =0a(28) =1906866a(29) =2056916

External references