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A177137
a(n) is the largest n-digit bemirp (A048895).
1
1901, 19001, 198901, 1909081, 19986091, 199800091, 1999880101, 19999919011, 199999069901, 1999998661891, 19999999196861, 199999990066801, 1999999999899101, 19999999999898161, 199999999998806191, 1999999999999988911, 19999999999998191191, 199999999999986661691
OFFSET
4,1
EXAMPLE
a(7) = 1909081 is the last among 7-digit emirp pairs (1909081, 1809091) which rotated through 180 degrees forms another emirp pair (1806061, 1606081).
CROSSREFS
Sequence in context: A251346 A078862 A190652 * A273913 A190651 A237787
KEYWORD
nonn,base
AUTHOR
Lekraj Beedassy, May 03 2010
EXTENSIONS
More terms from Giovanni Resta, Aug 14 2019
STATUS
approved