1,1

Table of n, a(n) for n=1..10.

Corresponding primes are: 11, 263, 6521, 2543134241,

225875452601146757084886003255695202165296363,

2054325274013051576593043138757255806440645138498014683534338706479543763.

Other terms are too large to be presented.

Cf. A155588 5^n+2^n-1.

Sequence in context: A217615 A050553 A005540 * A080741 A247356 A073436

Adjacent sequences: A155799 A155800 A155801 * A155803 A155804 A155805

nonn

Zak Seidov, Jan 27 2009

approved