125792

Appears in sequences

• Numbers k such that R_k - 10 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=11A256711
• Even composite positive integers m such that A052918(m-1)^2 == 1 (mod m).at n=21A338313
• a(1) = 1; a(n) = -Sum_{k=2..n} k^3 * a(floor(n/k)).at n=38A360658
• a(1) = 1; a(n) = -Sum_{k=2..n} k^3 * a(floor(n/k)).at n=39A360658