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A119572
a(n) = (2^(2^n) + 1 + 2^(2^(n + 1) - 1) + 1)/2
0
3, 7, 73, 16513, 1073774593, 4611686020574871553, 85070591730234615875067023894796828673, 28948022309329048855892746252171976963487637349870610241596083305694166515713
OFFSET
0,1
MATHEMATICA
a=Table[(2^(2^n) + 1 + 2^(2^(n + 1) - 1) + 1)/2, {n, 0, 10}]
CROSSREFS
Sequence in context: A088647 A075611 A191485 * A362651 A172995 A325476
KEYWORD
nonn
AUTHOR
Roger L. Bagula, May 31 2006
EXTENSIONS
Edited by N. J. A. Sloane, Jun 03 2006
STATUS
approved