246401

Appears in sequences

• Numerators of continued fraction convergents to sqrt(77).at n=11A041136
• Numerators of continued fraction convergents to sqrt(308).at n=11A041580
• Numerators of continued fraction convergents to sqrt(693).at n=7A042332
• Partial sums of A048697.at n=12A048773
• Nonprime numbers k such that (k+1)*Sum_{d|k} 1/(d+1) is an integer.at n=26A069155
• a(n) = 1250*n^2 + 100*n + 1.at n=13A154375
• a(n) = 2048*n^2 - 128*n + 1.at n=10A157448
• a(n) = 5000*n^2 + 200*n + 1.at n=6A157511
• a(n) = 80000*n^2 - 39200*n + 4801.at n=1A157653
• Largest number k such that the greatest prime factor of k^2 - 1 is prime(n).at n=5A175607
• Numbers k such that 13 is the largest prime factor of k^2 - 1.at n=33A181451
• Numbers m>=2, such that, if a prime p divides m^2-1, then every prime q<p divides m^2-1 as well.at n=25A194099
• a(n) = n^4 - 3*n^3 + 6*n^2 - 5*n + 2 (n >= 1).at n=22A304160