134094848

Appears in sequences

• Expansion of 2*x^3/((1-2*x)^2*(1-4*x)).at n=15A000431
• Numbers k such that sigma(k) = 2k + Omega(k), where Omega(n) is the number of prime divisors of n (with repetition).at n=6A063788
• Composite numbers n that divide 2 * sigma(n) - d(n) [that is, 2 * sum of divisors - number of divisors].at n=14A135470
• Numbers whose abundance is 14.at n=4A141546
• Numbers k such that sigma(k) == 0 (mod k+7).at n=5A274559
• Practical numbers (A005153) that are abundant and have a record low value of abundancy index.at n=25A362052