a(n) = [x^n] (1/(1 - 2*x/(1 - 2*x/(1 - 4*x/(1 - 4*x/(1 - 6*x/(1 - 6*x/(1 - ...))))))))^n, a continued fraction.

A293471

a(n) = [x^n] (1/(1 - 2*x/(1 - 2*x/(1 - 4*x/(1 - 4*x/(1 - 6*x/(1 - 6*x/(1 - ...))))))))^n, a continued fraction.

Terms

    a(0) =1a(1) =2a(2) =20a(3) =248a(4) =3472a(5) =53152a(6) =878144a(7) =15577984a(8) =296411392a(9) =6054973952a(10) =132994708480

External references