31143
domain: N
Appears in sequences
- 2^n written in base 5.at n=11A000866
- Duplicate of A000866.at n=11A004644
- a(n) = prime(n)_prime(n).at n=39A122622
- a(n) + a(n+1) + a(n+2) = n^5, with a(1) = a(2) = 0.at n=10A152730
- a(n) = n*(6*n^2 + 15*n + 5)/2.at n=21A163833
- Numbers n such that n*2^2203 - 1 is prime.at n=38A265503
- Starts of runs of 3 consecutive Lucas-Niven numbers (A351714).at n=9A351716
- First index k where A366574(k) = n.at n=28A366724
- Integers x such that there exist four integers 0<y<=z<=t<=w such that sigma(x)^5 = x^5 + y^5 + z^5 + t^5 + w^5.at n=8A386672
- Integers x such that there exist four integers 0<y<=z<=t<=w such that psi(x)^5 = x^5 + y^5 + z^5 + t^5 + w^5.at n=5A390006