Decomposition of A003631
Primes congruent to {2, 3} mod 5.
Decomposition of Inconsummate numbers
Inconsummate numbers in base 10: no number is this multiple of the sum of its digits (in base 10).
Decomposition of A003726
Numbers with no 3 adjacent 1's in binary expansion.
Decomposition of A003796
Numbers with no 3 adjacent 0's in binary expansion.
Decomposition of A003814
Numbers n such that the continued fraction for sqrt(n) has odd period length (values of n).
Decomposition of A004201
Accept one, reject one, accept two, reject two, ...
Decomposition of A004202
Skip 1, take 1, skip 2, take 2, skip 3, take 3, etc.
Decomposition of A004207
a(0) = 1, a(n) = sum of digits of all previous terms.
Decomposition of A004214
Positive numbers that are not the sum of three nonzero squares.
Decomposition of A004215
Numbers that are the sum of 4 but no fewer nonzero squares.