Decomposition of A108386
Primes p such that p's set of distinct digits is {1,3,7,9}.
Decomposition of A109303
Numbers n with at least one duplicate base 10 digit (A107846(n) > 0).
Decomposition of A109373
Semiprimes of the form semiprime + 1.
Decomposition of A111046
Difference between squares of twin prime pairs.
Decomposition of A111501
Numbers n such that n^3 - n^2 + 1 is prime.
Decomposition of Admirable numbers
Admirable numbers. A number n is admirable if there exists a proper divisor d' of n such that sigma(n)-2d'=2n, where sigma(n) is the sum of all divisors of n.
Decomposition of A112886
Triangle-free positive integers.
Decomposition of A113502
A number n is included if at least one of its divisors > 1 is a triangular number (i.e., is of the form m(m+1)/2, m >= 2).
Decomposition of A113801
Numbers that are congruent to {1, 13} mod 14.
Decomposition of A115921
Numbers n such that the decimal digits of phi(n) are a permutation of those of n.









