52205852194
domain: N
Appears in sequences
- Companion Pell numbers: a(n) = 2*a(n-1) + a(n-2), a(0) = a(1) = 2.at n=28A002203
- a(n) = 6*a(n-1) - a(n-2), with a(0) = 2, a(1) = 6.at n=14A003499
- Numerators of continued fraction convergents to sqrt(128).at n=13A041232
- Expansion of (1+x^2)/(1-2*x-x^2).at n=28A099425
- Expansion of (1+6*x+x^2-2*x^3)/((x^2+2*x-1)*(x^2-2*x-1)), bisection is NSW numbers.at n=27A159582
- a(1)=4, a(2)=6; for n > 2, a(n) = 2*a(n-1) + a(n-2) - 4*((n-1) mod 2).at n=27A162485
- Numbers such that floor(a(n)^2 / 8) is again a square.at n=30A204514