108889

Appears in sequences

• Numbers k such that 4^k + k is prime.at n=10A057909
• Composite q such that 4^q + q is prime.at n=7A100663
• Expansion of o.g.f. (1-x^2+x^4)/((1-x)^2*(1-x^2)^4*(1-x^3)^4).at n=24A123991
• a(n) = 121*n^2 - 11.at n=29A158539
• Number of 8-step S, E, and NW-moving king's tours on an n X n board summed over all starting positions.at n=15A187513
• Heptagonal numbers which are products of three distinct primes.at n=44A356422