43414domain: NAppears in sequencesNumber of ways of writing n as a sum of 7 squares.at n=25A008451Expansion of (Product_{k>0} (1 - x^(3*k)) / (1 - x^k))^3 in powers of x.at n=18A285927Number of ways of writing n^2 as a sum of seven squares.at n=5A361695