89482

Appears in sequences

• Numbers n such that 8*3^n + 1 is prime.at n=18A005538
• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 66.at n=3A031654
• Bases with a record -- new or tie -- smallest 'stem value' for which a prime by concatenation of decrements exists.at n=33A220402
• Numbers k such that (266*10^k + 1)/3 is prime.at n=37A269303
• a(1) = 2; for n > 1, a(n) is the least positive number not yet in the sequence such that Sum_{k=1..n} a(k) divides Sum_{k=1..n} a(k)^2.at n=43A318358