Decomposition of Odd numbers
The odd numbers: a(n) = 2n+1.
Decomposition of A005574
Numbers n such that n^2 + 1 is prime.
Decomposition of A005658
If n appears so do 2n, 3n+2, 6n+3.
Decomposition of A005837
Lexicographically earliest increasing sequence of positive numbers that contains no 4-term arithmetic progression.
Decomposition of A005839
Lexicographically earliest increasing nonnegative sequence that contains no 4-term arithmetic progression.
Decomposition of Even numbers
The even numbers: a(n) = 2n.
Decomposition of A005846
Primes of form n^2 + n + 41.
Decomposition of Primitive pseudoperfect numbers
Primitive pseudoperfect numbers.
Decomposition of Weird numbers
Weird numbers: abundant (A005101) but not pseudoperfect (A005835).
Decomposition of A006073
Numbers n such that n, n+1 and n+2 all have same number of distinct prime divisors.