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A133026
Concatenation of next n Fermat numbers A000215.
0
3, 517, 257655374294967297
OFFSET
1,1
COMMENTS
a(4) has 292 digits and is too large to include.
CROSSREFS
KEYWORD
base,bref,easy,nonn
AUTHOR
Omar E. Pol, Nov 09 2007
STATUS
approved