107002domain: NAppears in sequencesNumbers such that the digital sums in bases 2, 3, 5 and 10 all are equal.at n=21A135128Expansion of b(2)*b(4)/(1 - 2*x - 2*x^3 + 3*x^4), where b(k) = (1-x^k)/(1-x).at n=14A266367Number weak ascent sequences of length 2n (prefixed with a zero) with exactly n weak ascents.at n=6A373115