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A135697 Palindromes formed from the reflected decimal expansion of Pi. 5

%I

%S 3,33,313,3113,31413,314413,3141413,31411413,314151413,3141551413,

%T 31415951413,314159951413,3141592951413,31415922951413,

%U 314159262951413,3141592662951413,31415926562951413,314159265562951413

%N Palindromes formed from the reflected decimal expansion of Pi.

%C Pi = 3.14159265358979323846264338327... (see A000796).

%C The number of digits of a(n) is equal to n.

%e n ... Successive digits of a(n)

%e 1 ............ ( 3 )

%e 2 ........... ( 3 3 )

%e 3 .......... ( 3 1 3 )

%e 4 ......... ( 3 1 1 3 )

%e 5 ........ ( 3 1 4 1 3 )

%e 6 ....... ( 3 1 4 4 1 3 )

%e 7 ...... ( 3 1 4 1 4 1 3 )

%e 8 ..... ( 3 1 4 1 1 4 1 3 )

%e 9 .... ( 3 1 4 1 5 1 4 1 3 )

%e 10 .. ( 3 1 4 1 5 5 1 4 1 3 )

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

%K base,nonn,tabl

%O 1,1

%A _Omar E. Pol_, Mar 01 2008, Mar 28 2008

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Last modified October 19 04:40 EDT 2019. Contains 328211 sequences. (Running on oeis4.)