9176831domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = Sum_{k=0..floor(2*n/5)} binomial(2*k+1,2*n-5*k).at n=37A392455Expansion of 1 / ((1-x)^5 - x^7).at n=25A392546Prime numbersat n=613450