89522domain: NAppears in sequencesG.f.: exp( Sum_{n>=1} 2^A090740(n) * x^n/n ) where A090740(n) = highest exponent of 2 in 3^n-1.at n=33A182000Indices of record high-points in A307720.at n=21A307631Index of first occurrence of n-th prime in A307720.at n=13A307632