37523

Appears in sequences

• a(n) = floor( n*(n-1)*(n-2)*(n-3)/23 ).at n=32A011933
• (n - phi(n)) | sigma(n) for composite n not congruent to 2 (mod 4).at n=36A055164
• Numbers n such that sigma (phi ( n ) ) = sigma (sigma (n ) ) where phi is Euler's totient and sigma is the multiplicative sum-of-divisors function.at n=20A065556
• Number of cyclic numbers, primes with primitive root 10, (A001913) in the first 10^n primes (A000040).at n=4A098937
• Integers that are Rhonda numbers to base 12.at n=22A100971
• Triangle T, read by rows, equal to the matrix square of triangle A113350, where T transforms column k of T into column k+1 of T.at n=23A113355
• Column 2 of triangle A113355, also equals column 0 of A113355^3.at n=4A113358