20245

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has period 61.at n=33A020400
• Partial sums of A151791.at n=37A151792
• Number of nondecreasing arrangements of 6 numbers x(i) in -(n+4)..(n+4) with the sum of sign(x(i))*2^|x(i)| zero.at n=38A187990
• Antidiagonal sums of the convolution array A213753.at n=8A213755
• G.f.: Sum_{n>=0} x^n/(1 - x^2*(1+x)^n).at n=16A340775