168717
domain: N
Appears in sequences
- Numerators of continued fraction convergents to sqrt(10).at n=7A005667
- Duplicate of A005667.at n=7A084133
- Expansion of g.f. x*(1+x+2*x^2+2*x^3+5*x^4+5*x^5-3*x^6+2*x^7-x^8-x^9)/(1-6*x^6-x^12).at n=43A116559
- a(n) = sinh((2n-1)*arcsinh(3)).at n=4A173127
- a(n) = 6*a(n-2) + a(n-4), where a(0) = 3, a(1) = 5, a(2) = 19, a(3) = 31.at n=12A228471
- Numerators of continued fraction convergents to sqrt(10)/2 = sqrt(5/2) = A020797 + 1.at n=20A295333