1256673

Appears in sequences

• Numerators of continued fraction convergents to sqrt(345).at n=13A041652
• G.f.: A(x) = (1 + 21*x + 3*x^2 - x^3)/(1-x)^5.at n=32A183066
• a(n) = (3*n-1)*(n^4-18*n^3+179*n^2-582*n+720)/120.at n=37A381193