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A279860
a(n) is the first n-digit substring to repeat in the decimal expansion of e.
1
2, 18, 182, 1828, 98793, 987931, 4349076, 82549802, 450388721, 5291493974, 72883660263, 476539957100
OFFSET
1,1
COMMENTS
The first two occurrences of a(4) = 1828 appear consecutively as 18281828.
EXAMPLE
a(2) = 18 because 18 is the first 2-digit number to repeat in the decimal expansion of e = 2.7(18)28(18)...
2 appears at positions 0 and 4.
18 appears at positions 2 and 6.
182 appears at positions 2 and 6.
1828 appears at positions 2 and 6.
98793 appears at positions 478 and 494.
987931 appears at positions 478 and 494.
4349076 appears at positions 170 and 2731.
...
CROSSREFS
Sequence in context: A183285 A359458 A129627 * A362731 A138413 A066274
KEYWORD
nonn,base,more
AUTHOR
Bobby Jacobs, Dec 20 2016
EXTENSIONS
a(8)-a(12) from Alois P. Heinz, Dec 21 2016
STATUS
approved