26433domain: NAppears in sequencesRestricted partitions.at n=20A002574Number of partitions of n in which each part occurs an odd number (or zero) times.at n=49A055922Genus of stage-n Menger sponge.at n=4A135918Number of compositions of n into parts 3, 5 and 8.at n=52A245369Coefficient of x^n in (1 + x - n*x^2)^n.at n=8A307862