130576328

Appears in sequences

• a(n) = 16*a(n-1) - a(n-2).at n=7A001081
• Numerators of continued fraction convergents to sqrt(7).at n=27A041008
• Numerators of continued fraction convergents to sqrt(63).at n=13A041110
• Numerators of continued fraction convergents to sqrt(343).at n=15A041648
• Numbers k such that k^2-1 and k^2 are consecutive powerful numbers.at n=20A060860
• Numbers such that floor(a(n)^2 / 7) is a square.at n=22A204516
• 64*n^7 - 112*n^5 + 56*n^3 - 7*n.at n=8A243133
• Numerators of the other-side convergents to sqrt(7).at n=26A259597
• a(n) = T(n,n+1) where T(n,x) is a Chebyshev polynomial of the first kind.at n=7A342205
• Even numbers k such that k^2 - 1 is a powerful number.at n=2A365983