262207

Appears in sequences

• 8^n+2^n-1^n.at n=6A155592
• a(n) = smallest number that leads to a new cycle under the base-4 Kaprekar map of A165012.at n=18A165029
• Semi-sums (average) of two (not necessarily distinct) Mersenne primes (A000668).at n=24A169628
• Semi-sums (average) of any two distinct Mersenne primes (A000668).at n=18A171253
• a(n) = (2n-2)^3 + (2n-2) - 1.at n=32A255877