1,1

Table of n, a(n) for n=1..72.

The first number must be composite, so a(1) = 4; next number must be odd and a(2) = 1 or 3 would make a(1)+a(2) prime, so a(2) = 5; etc.

Cf. A075567.

Sequence in context: A154916 A077061 A072508 * A076087 A082486 A106591

Adjacent sequences: A075563 A075564 A075565 * A075567 A075568 A075569

nonn,easy

Amarnath Murthy, Sep 25 2002

Extended by Ray Chandler, Feb 13 2005

approved