53328
domain: N
Appears in sequences
- Numbers k such that phi(k) + 2 | sigma(k + 2).at n=28A015781
- McKay-Thompson series of class 15C for Monster.at n=20A058510
- McKay-Thompson series of class 15C for the Monster group with a(0) = 3.at n=20A153084
- a(n) = 49*n^2 - n.at n=32A157923
- a(n) = 1089*n^2 - 33.at n=6A158692
- Expansion of Product_{k>=1} ((1+x^k) / ((1-x^(2*k-1)) * (1-x^(8*k-4)))).at n=33A280908
- Row sums of A323179.at n=32A323180
- a(n) is the smallest number whose divisors include exactly n that can be written in the form m + reverse(m), for some m (A067030).at n=30A358513
- Numbers k with a prime factor other than 2 or 5 such that digsum(k) = digsum(repeating period of 1/k).at n=33A390294