58669

Appears in sequences

• Number of symmetric plane partitions of n.at n=43A005987
• Expansion of e.g.f. arcsinh(cosh(x) * log(x+1)).at n=9A012760
• Numbers n such that 8*10^n + 4*R_n + 5 is prime, where R_n = 11...1 is the repunit (A002275) of length n.at n=11A103082