id:A078262 - OEIS Search Results

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Sum of the forward and reverse concatenations of 1 to n.

+0
1

2, 33, 444, 5555, 66666, 777777, 8888888, 99999999, 1111111110, 23333333231, 2345555545332, 244567776755433, 25466789897765534, 2647689001998775635, 274869910212099785736, 28497092031222200795837, 2950719304132232301805938 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(3) = 123 +321 = 444,a(10) = 12345678910 + 10987654321 = 23333333231.`
	CROSSREFS	`Cf. A078263.` `Adjacent sequences: A078259 A078260 A078261 this_sequence A078263 A078264 A078265` `Sequence in context: A093992 A100023 A119300 this_sequence A118117 A083143 A064008`
	KEYWORD	`base,nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 24 2002`
	EXTENSIONS	`More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Jan 04 2003`

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Last modified October 11 09:12 EDT 2008. Contains 144832 sequences.

AT&T Labs Research