23498

Appears in sequences

• Growth function of an infinite cubic graph (number of nodes at distance <=n from fixed node).at n=37A038621
• Denominators of continued fraction convergents to sqrt(73).at n=10A041129
• Denominators of continued fraction convergents to sqrt(657).at n=14A042263
• a(n) = 12 + floor((1 + Sum_{j=1..n-1} a(j))/4).at n=34A120169
• Numbers k such that 7*R_k - 30 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=16A256829
• G.f.: Sum_{n>=0} x^n * (1 + x^n)^n / (1 - x^(n+1))^(n+1).at n=52A325046