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Search: id:A135697
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| A135697 |
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Palindromes formed from the reflected decimal expansion of Pi. |
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+0
5
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| 3, 33, 313, 3113, 31413, 314413, 3141413, 31411413, 314151413, 3141551413, 31415951413, 314159951413, 3141592951413, 31415922951413, 314159262951413, 3141592662951413, 31415926562951413, 314159265562951413
(list; table; graph; listen)
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OFFSET
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1,1
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COMMENT
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Pi = 3.14159265358979323846264338327... (see A000796).
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 ............ ( 3 )
2 ........... ( 3 3 )
3 .......... ( 3 1 3 )
4 ......... ( 3 1 1 3 )
5 ........ ( 3 1 4 1 3 )
6 ....... ( 3 1 4 4 1 3 )
7 ...... ( 3 1 4 1 4 1 3 )
8 ..... ( 3 1 4 1 1 4 1 3 )
9 .... ( 3 1 4 1 5 1 4 1 3 )
10 .. ( 3 1 4 1 5 5 1 4 1 3 )
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CROSSREFS
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Cf. A000796, A002113.
Cf. A138070, A138071.
Adjacent sequences: A135694 A135695 A135696 this_sequence A135698 A135699 A135700
Sequence in context: A003129 A043038 A107127 this_sequence A097486 A121515 A002277
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KEYWORD
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base,nonn,tabl
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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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