1,1

Only positive primes are allowed. The alternation between larger and smaller values that develops at n=16 is interesting. It is not clear whether it continues indefinitely. - Franklin T. Adams-Watters, Jul 17 2006

Table of n, a(n) for n=1..31.

Cf. A114742.

Sequence in context: A335116 A135372 A037021 * A096177 A075238 A158281

Adjacent sequences: A114738 A114739 A114740 * A114742 A114743 A114744

nonn

Amarnath Murthy, Nov 15 2005

More terms from Franklin T. Adams-Watters, Jul 17 2006

approved