140049
domain: N
Appears in sequences
- MacMahon's generalized sum of divisors function.at n=35A002128
- Numbers m for which abs(A045763(m) - A073757(m)) = 3, i.e., signed difference of size of related and unrelated sets to n equals either 3 or -3.at n=7A083250
- Least k such that 10^n+k is a brilliant number (cf. A078972).at n=8A083289
- a(n) = (n-1)*n*(n+1)*(n+2)*(2*n+1)/40.at n=19A112851
- Positive integers that are palindromes (of even length) in binary, each made by concatenating two identical binary palindromes.at n=31A161400
- Denominator of A010786(n+1) / A010786(n).at n=38A208450
- Number of Dyck paths of semilength n and height exactly 8.at n=6A289421