137379191137
domain: N
Appears in sequences
- a(0) = 1, a(1) = 2, a(n) = 4*a(n-1) - a(n-2).at n=20A001075
- Numbers k such that any group of k consecutive integers has integral standard deviation (viz. A011944(k)).at n=10A011943
- Numerators of continued fraction convergents to sqrt(12).at n=19A041016
- Numerators of continued fraction convergents to sqrt(48).at n=19A041082
- Numerators of continued fraction convergents to sqrt(147).at n=9A041268
- Numerators of continued fraction convergents to sqrt(192).at n=19A041356
- Numerators of continued fraction convergents to sqrt(363).at n=7A041686
- Numerators of continued fraction convergents to sqrt(588).at n=9A042126
- Numbers n such that the Diophantine equation (x+2)^3-x^3=2*n^2 has solutions.at n=10A102344
- a(2*n) = A001570(n), a(2*n+1) = A011943(n+1).at n=19A110293
- Denominators of continued fraction convergents to sqrt(3)/2.at n=20A144536
- a(n) = 512*n^10 - 1280*n^8 + 1120*n^6 - 400*n^4 + 50*n^2 - 1.at n=7A243136