18405321661
domain: N
Appears in sequences
- Numbers k such that k^2 is centered hexagonal.at n=9A001570
- Denominators of continued fraction convergents to sqrt(12).at n=18A041017
- Denominators of continued fraction convergents to sqrt(48).at n=18A041083
- Binomial transform of sinh(x)*cosh(sqrt(3)*x).at n=19A084156
- a(2n) = A001570(n), a(2n+1) = -A007654(n+1).at n=18A108946
- a(2*n) = A001570(n), a(2*n+1) = A011943(n+1).at n=18A110293
- Primes of the form ((2 + sqrt(3))^(2*k+1) + (2 - sqrt(3))^(2*k+1))/4.at n=7A117808
- a(n) = 14*a(n-1) - a(n-2), with a(1) = a(2) = 1.at n=10A122571
- Numerators of continued fraction convergents to sqrt(3)/2.at n=19A144535
- Primes in A173299.at n=17A173929
- Exceptional primes: those for which Eq. (4.8) in Cosgrave and Dilcher (2011) fails.at n=7A239902