67044
domain: N
Appears in sequences
- Numbers k such that k*2^k - k - 1 is prime.at n=28A046843
- a(n) = 49*n^2 - n.at n=36A157923
- a(n) = 1369*n^2 - 37.at n=6A158743
- Fundamental discriminant D < 0 with the least absolute value such that the first n primes p have (D/p) >= 0, negated.at n=12A306218
- Fundamental discriminant D < 0 with the least absolute value such that the first n primes p have (D/p) >= 0, negated.at n=13A306218
- Fundamental discriminant D < 0 with the least absolute value such that the first n primes p have (D/p) >= 0, negated.at n=14A306218
- Fundamental discriminant D < 0 with the least absolute value such that the first n primes p have (D/p) >= 0, negated.at n=15A306218
- Indices of records of A232928.at n=12A329953