541165879296domain: NAppears in sequencesDenominator of series coefficients for Archimedes' spiral which transforms into Galileo's spiral.at n=8A202408Number of solutions to Sum_{i=1...n} x_i^2 == 1 (mod 8) with x_i in 0..7.at n=13A229138Binomial transform of the sum of the first n even squares (A002492).at n=27A240434