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Search: id:A046270
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A046270 Largest prime substring in 4^n (0 if none). +0
3
0, 0, 0, 0, 5, 2, 409, 163, 6553, 2621, 857, 419, 1677721, 71, 43, 107, 4294967, 171798691, 6871947673, 779069, 511627, 4398046511, 18604441, 703687441, 28147497671, 11258999, 59962737049, 180143985094819, 759403792793 (list; graph; listen)
OFFSET

0,5
CROSSREFS

Cf. A046262.

Sequence in context: A095998 A099612 A068566 this_sequence A139207 A137237 A077602

Adjacent sequences: A046267 A046268 A046269 this_sequence A046271 A046272 A046273

KEYWORD

nonn

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com), Jun 15 1998.

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

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