id:A056524 - OEIS Search Results

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Palindromes with even number of digits.

+0
5

0, 11, 22, 33, 44, 55, 66, 77, 88, 99, 1001, 1111, 1221, 1331, 1441, 1551, 1661, 1771, 1881, 1991, 2002, 2112, 2222, 2332, 2442, 2552, 2662, 2772, 2882, 2992, 3003, 3113, 3223, 3333, 3443, 3553, 3663, 3773, 3883, 3993, 4004, 4114, 4224, 4334, 4444, 4554 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`Concatenation of n with reverse of n (keeping leading zeros in the reverse)`
	FORMULA	`a(n) = n*10^A055642(n)+A004086(n)`
	CROSSREFS	`Cf. A002113, A004086, A056525, A066492.` `Sequence in context: A014181 A068900 A083852 this_sequence A110745 A020338 A052191` `Adjacent sequences: A056521 A056522 A056523 this_sequence A056525 A056526 A056527`
	KEYWORD	`base,easy,nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), Jun 16 2000`

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Last modified November 27 14:30 EST 2009. Contains 167569 sequences.

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