296011017105
domain: N
Appears in sequences
- a(n) = 4*a(n-1) - a(n-2) with a(0) = 0, a(1) = 1.at n=21A001353
- Pisot sequence E(4,15): a(n) = floor(a(n-1)^2/a(n-2)+1/2) for n>1, a(0)=4, a(1)=15.at n=19A010905
- Bisection of A001353. Indices of square numbers which are also octagonal.at n=10A028230
- a(n) = 2702*a(n-1) - a(n-2); a(-1) = -15; a(0) = 15.at n=4A094836
- a(2*n) = A028230(n), a(2*n+1) = -A067900(n+1).at n=20A110294
- a(n) = -14*a(n-1) - a(n-2), with a(1) = a(2) = 1.at n=11A122572
- a(0) = 1, a(1) = -4, a(n) = -4*a(n-1) - a(n-2) for n > 1.at n=20A125905
- Denominators of continued fraction convergents to sqrt(3)/2.at n=21A144536
- Numerators b(n) of Pythagorean approximations b(n)/a(n) to sqrt(3).at n=19A195503