Decomposition of Lucky primes
Numbers that are both lucky and prime.
Decomposition of Unhappy numbers
Unhappy numbers: numbers having period-8 2-digitized sequences
Decomposition of A031368
a(n) = prime(2n-1).
Decomposition of A031396
Numbers n such that Pell equation x^2 - n y^2 = -1 is soluble.
Decomposition of Digitally balanced numbers
Digitally balanced numbers: numbers which in base 2 have the same number of 0's as 1's.
Decomposition of A031924
Lower prime of a difference of 6 between consecutive primes.
Decomposition of A031925
Upper prime of a difference of 6 between consecutive primes.
Decomposition of A031926
Lower prime of a difference of 8 between consecutive primes.
Decomposition of A031930
Lower prime of a difference of 12 between consecutive primes.
Decomposition of A031932
Lower prime of a pair of consecutive primes having a difference of 14.