28437
domain: N
Appears in sequences
- Running time of Takeuchi function.at n=8A000651
- Numbers k such that 39*2^k + 1 is prime.at n=47A002269
- Numbers k such that 10^999 + k is a (titanic) prime.at n=18A074282
- Row sums of triangle A091604.at n=23A091610
- Numbers n such that 10^n - 93 is prime.at n=25A178531
- Composite numbers and 1 which yield a prime whenever a 7 is inserted anywhere in them, including at the beginning or end.at n=39A216168
- a(n) = 11*Fibonacci(n+3) + Fibonacci(n-8) with n>=0.at n=15A282465
- Number of partitions of 3*n that have exactly n prime parts.at n=36A299731
- Semiprimes that are also the sums of two, three and four successive semiprimes.at n=5A370685