28124

Appears in sequences

• Numbers k such that sigma(k+2) = sigma(k).at n=32A007373
• Numerators of continued fraction convergents to sqrt(341).at n=8A041644
• Numbers k such that k^4 == 1 (mod 5^5).at n=35A056102
• a(n) = 4*(5*n^2 - 5*n + 1).at n=37A193448
• a(n) = 9*5^n-1.at n=5A198768
• Sequence shifts left ten places under Weigh transform with a(n) = signum(n) for n<10.at n=50A316082
• a(n) = Sum_{1 <= x_1, x_2 <= n} gcd(x_1, x_2, n)^4.at n=11A372926