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A135697 Palindromes formed from the reflected decimal expansion of Pi. 5
3, 33, 313, 3113, 31413, 314413, 3141413, 31411413, 314151413, 3141551413, 31415951413, 314159951413, 3141592951413, 31415922951413, 314159262951413, 3141592662951413, 31415926562951413, 314159265562951413 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Pi = 3.14159265358979323846264338327... (see A000796).
The number of digits of a(n) is equal to n.
LINKS
EXAMPLE
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 )
CROSSREFS
Sequence in context: A274264 A107127 A207323 * A226508 A097486 A121515
KEYWORD
base,nonn
AUTHOR
Omar E. Pol, Mar 01 2008, Mar 28 2008
STATUS
approved

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Last modified July 25 03:25 EDT 2024. Contains 374586 sequences. (Running on oeis4.)