140448
domain: N
Appears in sequences
- Balanced refactorable numbers.at n=14A078543
- Numbers that can be expressed as the difference of the squares of primes in exactly eight distinct ways.at n=27A092004
- Numbers n such that sigma(n) = 14*phi(n) (where sigma=A000203, phi=A000010).at n=11A171259
- Numbers with prime factorization pqrst^5.at n=17A190383
- Three-column table read by rows: Triples that have the same value of phi, sigma, and tau.at n=10A322679
- Three-column table read by rows: Primitive distinct triples that have the same value of phi, sigma, and tau.at n=10A322689
- Triangle T(n,k) defined by Sum_{k=1..n} T(n,k)*u^k*x^n/n! = Product_{j>0} (1-x^j)^(-u/j).at n=40A338805
- Number of ways to write n as an ordered sum of 7 nonprime numbers.at n=40A341484
- Tetrahedral-sided isosceles Heron triangle pairs.at n=8A349948
- G.f. A(x) satisfies A(x) = 1 + x^3*A(x)^3*(1 + x*A(x)).at n=22A365724