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A135634 Palindromes formed from the reflected decimal expansion of e. 3
2, 22, 272, 2772, 27172, 271172, 2718172, 27188172, 271828172, 2718228172, 27182828172, 271828828172, 2718281828172, 27182811828172, 271828181828172, 2718281881828172, 27182818281828172, 271828182281828172 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

e = 2.71828182845904523536028747135... (See A001113).

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 ............ ( 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 )

CROSSREFS

Cf. A001113, A002113.

Cf. A138068, A138069.

Sequence in context: A226706 A036841 A264836 * A156505 A256928 A266888

Adjacent sequences:  A135631 A135632 A135633 * A135635 A135636 A135637

KEYWORD

base,nonn

AUTHOR

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

STATUS

approved

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Last modified August 17 15:19 EDT 2017. Contains 290635 sequences.