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A057841 a(n) = 2^A057838(n) corresponding to extremal cases of A055079. 2
4, 8, 2048, 34359738368, 2361183241434822606848, 3138550867693340381917894711603833208051177722232017256448 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Ray Chandler, Table of n, a(n) for n=1..17

FORMULA

a(n) = 2^A057838(n) = A055079(A057838(n)).

EXAMPLE

a(7) = 2^419 which has 127 decimal digits.

a(35) = 2^15239 which has 4588 decimal digits.

CROSSREFS

Cf. A000005, A001221, A001222, A055079, A058060, A058061, A057838.

Sequence in context: A013445 A201386 A009511 * A069883 A069647 A011348

Adjacent sequences:  A057838 A057839 A057840 * A057842 A057843 A057844

KEYWORD

nonn

AUTHOR

Labos Elemer, Nov 24 2000

EXTENSIONS

Edited by Ray Chandler, Aug 14 2010

STATUS

approved

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Last modified November 12 12:43 EST 2018. Contains 317109 sequences. (Running on oeis4.)