70210
domain: N
Appears in sequences
- Even square pyramidal numbers.at n=28A015222
- Number of odd non-cluster primes less than 10^n.at n=5A039507
- Sum of next n even interprimes.at n=22A075675
- Structured rhombic dodecahedral numbers (vertex structure 9).at n=29A100157
- Number of squares formed from a square composed of p^2 unit squares where p is n-th prime.at n=16A262247
- Number of pairs of binary trees with n leaves which have only a single common parse word under the grammar G = {0 -> 12, 0 -> 21, 1 -> 02, 1 -> 20, 2 -> 01, 2 -> 10}.at n=6A265279
- G.f.: Sum_{k>=1} x^(2*k-1)/(1-x^(2*k-1)) * Product_{k>=1} (1+x^k)/(1-x^k).at n=23A305105