93762domain: NAppears in sequencesNumbers n such that 123*2^n-1 is prime.at n=34A050587Expansion of Product_{k>=1} 1/(1 - x^k / (1 - k*x)).at n=11A336990G.f.: Product_{k >= 0} ((1 + x^(2*k+1)) / (1 - x^(2*k+1)))^k.at n=38A361008