69631

Appears in sequences

• a(n) = T(2, n), where T is the array given by A047858.at n=13A047859
• Arithmetic mean of successive Mersenne primes.at n=4A098041
• a(n) = 68*n^2 - 1.at n=31A158730
• Semi-sums (average) of two (not necessarily distinct) Mersenne primes (A000668).at n=19A169628
• Semi-sums (average) of any two distinct Mersenne primes (A000668).at n=14A171253
• a(n) = 17*2^n - 1.at n=12A198275
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 173", based on the 5-celled von Neumann neighborhood.at n=23A286199
• Smallest Boolean functions from big equivalence classes representing monotone functions (subsequence of A227723).at n=43A349743
• Smallest initial value for unimodal Collatz (3x+1)/2 glide sequence that begins with exactly n increases.at n=11A381707