Decomposition of A129805
Primes congruent to +-1 mod 18.
Decomposition of A129845
Numbers n such that n and 2n share at least one digit.
Decomposition of A130091
Numbers having in their canonical prime factorization mutually distinct exponents.
Decomposition of A131323
Odd numbers n such that the binary expansion of n ends in an even number of 1's.
Decomposition of Beastly primes (v2)
Beastly primes (version 2): primes containing 666 as a substring.
Decomposition of A131835
Numbers starting with 1.
Decomposition of A132230
Primes congruent to 1 (mod 30).
Decomposition of A132359
Numbers divisible by the square of their last decimal digit.
Decomposition of Imperfect numbers
Imperfect numbers: Not equal to sum of proper divisors.
Decomposition of A133813
Numbers that are primally tight and have strictly descending powers.









