66969domain: NAppears in sequencesExpansion of 1/((1-2x)(1-3x)(1-8x)(1-11x)).at n=4A025950Numbers k such that k and k^2 use only the digits 1, 4, 6, 8 and 9.at n=19A137055Numbers with digits 6 and 9 only.at n=35A284636Number of permutations of [n] avoiding {1324, 2341, 4123}.at n=11A294703