29709653domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) is the least prime p such that exponent of highest power of 2 dividing 3p+1 equals n.at n=19A087964Numbers of the form (2^(2*j + 6*k + 10) - 2^(2*j + 2) - 3)/9, with j,k >= 0.at n=18A342816a(n) = (85*4^n - 1)/3.at n=9A353957Prime numbersat n=1840918