50407
domain: N
Appears in sequences
- Numbers k such that 10^999 + k is a (titanic) prime.at n=27A074282
- E.g.f. satisfies: A(x) = (exp(x) + exp(x*A(x)^2))/2.at n=6A195511
- Number of length 4 1..(n+1) arrays with every leading partial sum divisible by 2, 3, 5 or 7.at n=18A258635
- Least inverse of A073454: Smallest m such that m divided by the primes up to m have exactly n repeated residues.at n=28A274320
- Starts of runs of 4 consecutive Gray-code Niven numbers (A344341).at n=38A344344
- Numbers that can be represented in more than one way as p^2+p*q+q^2 with p and q primes, p<=q.at n=34A349987
- Euler transform of A055457.at n=38A373296