538112
domain: N
Appears in sequences
- Numbers whose base-9 representation has exactly 7 runs.at n=18A043636
- Numbers n such that (A000203(n)+28)/n is an integer.at n=19A162302
- Ceiling(n/3)-perfect numbers.at n=17A177084
- E.g.f. satisfies: A(x)^2 = A( x^2*exp(2*x) ).at n=7A274482
- Numbers whose deficiency is a perfect number.at n=33A302125
- Numbers m with deficiency 28: sigma(m) - 2*m = -28.at n=9A392382