3814253

Properties

Appears in sequences

• a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (natural numbers >= 3), t = (F(2), F(3), F(4), ...).at n=25A024878
• Primes p for which exactly seven bases b with 1 < b < p exist such that p is a base-b Wieferich prime.at n=17A255210
• Prime numbersat n=270925