684889domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = floor((x^n-(1-x)^n)/sqrt(7)+1/2) where x = (sqrt(7)+1)/2.at n=23A136425Number of distinct terms by nesting the 2nd elementary symmetric polynomial in 4 variables.at n=8A246424Prime numbersat n=55426