178489domain: NPropertiesPrimalityPrimeyesAppears in sequencesFloor( Pi * (3/2)^n ).at n=27A047625Hypotenuses of primitive Pythagorean triples in A195561 and A195562.at n=8A195564x-values in the solution to 17*x^2 - 16 = y^2.at n=9A199772Prime numbersat n=16201