152139002499
domain: N
Appears in sequences
- Pell-Lucas numbers: numerators of continued fraction convergents to sqrt(2).at n=30A001333
- a(0) = 1, a(1) = 3; for n > 1, a(n) = 6*a(n-1) - a(n-2).at n=15A001541
- Numerators of continued fraction convergents to sqrt(8).at n=29A041010
- Numerators of continued fraction convergents to sqrt(50).at n=9A041084
- Numerators of continued fraction convergents to sqrt(98).at n=19A041176
- Numerators of continued fraction convergents to sqrt(200).at n=9A041370
- Numerators of continued fraction convergents to sqrt(392).at n=19A041744
- Expansion of (1+x)/(1-2*x-x^2).at n=29A078057
- a(0) = a(1) = 1; thereafter a(2*n+1) = 2*a(2*n) - a(2*n-1), a(2*n) = 4*a(2*n-1) - a(2*n-2).at n=30A079496
- Expansion of g.f. (1+x)*(3+x)/(1+6*x^2+x^4).at n=28A100434
- a(n) = -2*a(n-1) + a(n-2) for n>1, a(0)=1, a(1)=-1.at n=30A123335
- a(n) = 6*a(n-2) - a(n-4) for n > 4, with a(1)=1, a(2)=0, a(3)=3, a(4)=2.at n=30A126354
- Numerators of the upper principal and intermediate convergents to 2^(1/2).at n=29A143609
- Numbers such that floor(a(n)^2 / 8) is again a square.at n=31A204514