578509domain: NPropertiesPrimalityPrimeyesAppears in sequencesChebyshev polynomials S(n,83) + S(n-1,83) with Diophantine property.at n=3A097840Number of nX3 0..1 arrays with every element equal to 0, 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.at n=8A299055Prime numbersat n=47474