756786domain: NAppears in sequencesExpansion of 1/(1-x^2*(1+x)^3).at n=23A116090a(n) = smallest magic sum of any 3 X 3 semimagic square composed of n-gonal numbers.at n=4A265142Number of compositions of 5*n-1 into parts 2 and 5.at n=13A369842Expansion of 1 / ((1-x)^2 - x^5).at n=32A392540