41649

Appears in sequences

• Numbers k such that 2*7^k - 1 is prime.at n=14A002959
• Largest integer not expressible as a nonnegative linear combination of n and n^2 + 1.at n=34A087908
• a(n) = A007290(n+2) - 1 = 2*C(n+2,3) - 1.at n=49A108766
• a(n) = 34*n^2 - 1.at n=34A158588