83121
domain: N
Appears in sequences
- Numbers n such that n | Sigma_2(n) + Sigma_1(n) + Sigma_0(n).at n=18A057852
- Numbers k such that 7^k + 6^(k-1) is prime.at n=21A096185
- 1-Euler triangle.at n=57A188587
- 1-Euler triangle.at n=63A188587
- Number of 4Xn arrays containing n copies of 0..4-1 with every element equal to or 1 greater than any north, west or northwest neighbors modulo 4 and the upper left element equal to 0.at n=10A267405