Decomposition of A023204
Numbers n such that n and 2n + 3 both prime.
Decomposition of A023205
Numbers n such that n and 2n + 5 are both prime.
Decomposition of A023225
Numbers n such that n and 7n + 6 are both prime.
Decomposition of A023240
Numbers n such that n and 10n + 9 are both prime.
Decomposition of A023241
Numbers n such that n remains prime through 2 iterations of function f(x) = x + 6.
Decomposition of A023271
Primes p such that p, p+6, p+12, p+18 are all primes.
Decomposition of A023688
Numbers with exactly 6 ones in binary expansion.
Decomposition of A023689
Numbers with exactly 7 ones in binary expansion.
Decomposition of A023705
Numbers with no 0's in base 4 expansion.
Decomposition of A023733
Numbers with no 3's in base 5 expansion.