28306

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has period 63.at n=36A020402
• a(n) = A000045(n) - A000931(n).at n=23A129973
• Partial sums of A003214.at n=15A174566
• Number of length-(n+1) 0..4 arrays with new values introduced in sequential order, and with new repeated values introduced in sequential order, both starting with zero.at n=8A268323
• G.f.: Sum_{n>=0} x^n * (1 + x^n)^n / (1 - x^(n+1))^(n+1).at n=64A325046