2081028097

Appears in sequences

• a(n) = 16*a(n-1) - a(n-2).at n=8A001081
• Numerators of continued fraction convergents to sqrt(7).at n=31A041008
• Numerators of continued fraction convergents to sqrt(28).at n=15A041044
• Numerators of continued fraction convergents to sqrt(63).at n=15A041110
• Numerators of continued fraction convergents to sqrt(112).at n=23A041202
• Numerators of continued fraction convergents to sqrt(252).at n=15A041472
• Numerators of continued fraction convergents to sqrt(448).at n=7A041852
• Chebyshev polynomial of the first kind T(n,x), evaluated at x=n.at n=8A115066
• Numbers x such that x^2 - 28*y^2 = 1 for some integer y.at n=4A175633
• Numbers such that floor(a(n)^2 / 7) is a square.at n=25A204516
• 128*n^8 - 256*n^6 + 160*n^4 - 32*n^2 + 1.at n=8A243134
• Numerators of the other-side convergents to sqrt(7).at n=30A259597
• Numerators of continued fraction convergents to sqrt(7)/2.at n=15A294972