OFFSET

1,1

COMMENTS

The number n must be zero or a power of 2. Checked n being powers of two through 2^20. Thus a(5) > 10^3200000. Primes of this magnitude are rare (about 1 in 7.5 million), so chance of finding one is remote with today's computer algorithms and speeds. - Robert Price, Apr 29 2013

CROSSREFS

KEYWORD

nonn

AUTHOR

Labos Elemer, Jun 01 2004

EXTENSIONS

No more terms for n < 1000, so the next term will be too large to include. - Hugo Pfoertner, Aug 17 2004

STATUS

approved