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Search: id:A135634
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| A135634 |
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Palindromes formed from the reflected decimal expansion of e. |
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+0
4
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| 2, 22, 272, 2772, 27172, 271172, 2718172, 27188172, 271828172, 2718228172, 27182828172, 271828828172, 2718281828172, 27182811828172, 271828181828172, 2718281881828172, 27182818281828172, 271828182281828172
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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e = 2.71828182845904523536028747135... (See A001113).
The number of digits of a(n) is equal to n.
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EXAMPLE
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n ... Successive digits of a(n)
1 ............ ( 2 )
2 ........... ( 2 2 )
3 .......... ( 2 7 2 )
4 ......... ( 2 7 7 2 )
5 ........ ( 2 7 1 7 2 )
6 ....... ( 2 7 1 1 7 2 )
7 ...... ( 2 7 1 8 1 7 2 )
8 ..... ( 2 7 1 8 8 1 7 2 )
9 .... ( 2 7 1 8 2 8 1 7 2 )
10 .. ( 2 7 1 8 2 2 8 1 7 2 )
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CROSSREFS
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Cf. A001113, A002113.
Cf. A138068, A138069.
Sequence in context: A151617 A082777 A036841 this_sequence A156505 A155674 A078232
Adjacent sequences: A135631 A135632 A135633 this_sequence A135635 A135636 A135637
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KEYWORD
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base,nonn
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AUTHOR
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Omar E. Pol (info(AT)polprimos.com), Mar 01 2008, Mar 28 2008
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