

A104843


Primes from merging of 2 successive digits in decimal expansion of e.


39



71, 59, 23, 53, 47, 71, 13, 97, 47, 59, 67, 53, 47, 59, 71, 13, 17, 19, 59, 17, 41, 13, 59, 29, 43, 29, 29, 59, 73, 13, 23, 79, 43, 23, 29, 53, 31, 19, 19, 11, 73, 83, 41, 79, 89, 41, 67, 47, 61, 47, 41, 11, 53, 37, 23, 43, 37, 71, 53, 17, 61, 83, 61, 13, 31, 13, 83, 29, 97
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OFFSET

1,1


COMMENTS

Scan decimal expansion of e from left to right, recording any 2digit primes seen. Overlaps are allowed in all the sequences in this family.  N. J. A. Sloane, Feb 05 2012
Leading zeros are not permitted, so each term is 2 digits in length. [From Harvey P. Dale, Oct 23 2011]


LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000
Eric Weisstein, e


MATHEMATICA

With[{len=2}, FromDigits/@Select[Partition[RealDigits[E, 10, 1000][[1]], len, 1], PrimeQ[FromDigits[#]]&&IntegerLength[FromDigits[#]]==len&]] (* Harvey P. Dale, Oct 23 2011 *)


CROSSREFS

Cf. A001113, A073246 (the onedigit primes in e), A104844  A104862.
Sequence in context: A122967 A087075 A095936 * A127316 A217414 A159025
Adjacent sequences: A104840 A104841 A104842 * A104844 A104845 A104846


KEYWORD

nonn,base


AUTHOR

Andrew G. West (WestA(AT)wlu.edu), Mar 27 2005


EXTENSIONS

Changed offset from 0 to 1 by Vincenzo Librandi, Apr 21 2013


STATUS

approved



