24065

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted then there are a pair of central terms both equal to 9.at n=37A031422
• a(n) = least k such that the remainder when 17^k is divided by k is n.at n=21A128157
• Expansion of 5*(1-2*x)/(1-3*x-2*x^2+4*x^3).at n=8A189318
• T(n,k)=Number of -k..k arrays of length n with the sum ahead of each element differing from the sum following that element by k or less.at n=43A221967
• Number of strict integer partitions of 2n not containing n.at n=34A365828
• Numbers X such that X^2 + Y^2 = 2^(2*k) + 1 and X > Y > 0 and k is the binary digit length of X-1.at n=43A369703