53319

Appears in sequences

• a(n) = 121*n^2 - 2*n.at n=20A157040
• Number of rooted trees with n nodes and omega-valency 2.at n=15A193487
• Numbers k such that k^2 +/- (k-1) and (k-1)*k^2 +/- 1 are all primes.at n=40A239326