36421
domain: N
Appears in sequences
- Heptagonal numbers divisible by 7.at n=35A117795
- Numbers with three distinct prime factors (each of which may or may not be repeated) which when concatenated in any order form a prime number.at n=4A181559
- a(n) = (n + 1)^2*(5*n^2 + 10*n + 2)/2.at n=10A269237
- Sum of all the parts in the partitions of n into 8 squarefree parts.at n=43A326444
- a(n) = hypergeom([-n/3, (1 - n)/3, (2 - n)/3], [1, 1], -27).at n=10A344560
- E.g.f. satisfies A(x) = exp( (x/(1-x)) * A(x)^2 ).at n=5A361065