19133
domain: N
Appears in sequences
- a(n) is the concatenation of n and 7n.at n=18A009441
- The sequence M(n) in A022905.at n=32A022908
- Smallest multiple of n^2 beginning with n.at n=18A078210
- Numbers n such that p(10n) is prime, where p(n) is the number of partitions of n.at n=27A114170
- Numbers with 3 or more prime factors (with multiplicity) such that every concatenation of their prime factors is prime.at n=21A217264
- G.f. satisfies: A(x) = x + A(x^2 + A(x^3 + A(x^4 + A(x^5 +...)))).at n=17A228835
- Number of partitions p of n such that median(p) > multiplicity(min(p)).at n=42A240215
- Number of graphs with n nodes having fewer than n edges.at n=11A328057
- Numbers whose prime indices have more than one permutation with all equal run-sums.at n=30A383015