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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; table; 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

Table of n, a(n) for n=1..18.

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

Cf. A000796, A002113, A039954, A138070, A138071.

Sequence in context: A274264 A107127 A207323 * A226508 A097486 A121515

Adjacent sequences:  A135694 A135695 A135696 * A135698 A135699 A135700

KEYWORD

base,nonn,tabl

AUTHOR

Omar E. Pol, Mar 01 2008, Mar 28 2008

STATUS

approved

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Last modified August 23 14:13 EDT 2019. Contains 326243 sequences. (Running on oeis4.)