67117057

Appears in sequences

• a(n) = 1^n + 2^n + 4^n.at n=13A001576
• Divisors of 2^39 - 1.at n=11A003545
• a(n) = sigma_13(n), the sum of the 13th powers of the divisors of n.at n=3A013961
• Numerator of sum of -13th powers of divisors of n.at n=3A017689
• Numbers whose binary expansion has only the digit "1" as first, central and final digit.at n=13A135576