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A135696
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Palindromes with odd number of digits formed from the reflected decimal expansion of e.
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3
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2, 272, 27172, 2718172, 271828172, 27182828172, 2718281828172, 271828181828172, 27182818281828172, 2718281828281828172, 271828182848281828172, 27182818284548281828172
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| e = 2.71828182845904523536028747135... (see A001113).
The number of digits of a(n) is equal to 2n-1.
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EXAMPLE
| n ............ a(n)
1 ............. 2
2 ............ 272
3 ........... 27172
4 .......... 2718172
5 ......... 271828172
6 ........ 27182828172
7 ....... 2718281828172
8 ...... 271828181828172
9 ..... 27182818281828172
10 ... 2718281828281828172
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CROSSREFS
| Cf. A001113, A002113.
Sequence in context: A188964 A007512 A048534 * A008775 A174710 A200168
Adjacent sequences: A135693 A135694 A135695 * A135697 A135698 A135699
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KEYWORD
| base,nonn
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AUTHOR
| Omar E. Pol (info(AT)polprimos.com), Mar 01 2008, corrected Mar 02 2008
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