12813606

Appears in sequences

• Numerators of continued fraction convergents to sqrt(40).at n=8A041066
• a(n) = 6*a(n-1) + a(n-2), starting with a(0)=2 and a(1)=6.at n=9A085447
• Continued cotangent recurrence a(n+1) = a(n)^3 + 3*a(n) and a(1) = 6.at n=2A145180
• a(n) = n*(n^2 + 3)*(n^6 + 6*n^4 + 9*n^2 + 3).at n=6A261574
• Numbers k such that 10*k^2 + 40 is a square.at n=4A309330