id:A073730 - OEIS Search Results

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Concatenation of largest and smallest digits of n in decimal representation.

+0
2

11, 22, 33, 44, 55, 66, 77, 88, 99, 10, 11, 21, 31, 41, 51, 61, 71, 81, 91, 20, 21, 22, 32, 42, 52, 62, 72, 82, 92, 30, 31, 32, 33, 43, 53, 63, 73, 83, 93, 40, 41, 42, 43, 44, 54, 64, 74, 84, 94, 50, 51, 52, 53, 54, 55, 65, 75, 85, 95, 60, 61, 62, 63, 64, 65, 66, 76, 86, 96 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`10 <= a(n) <= 99; a(a(n))=a(n).`
	FORMULA	`a(n) = A054055(n)*10 + A054054(n).`
	EXAMPLE	`a(12321)=31; a(3210123)=30; a(59387)=83; a(8923)=92.`
	CROSSREFS	`Cf. A073729.` `Sequence in context: A013576 A065998 A073729 this_sequence A087346 A060314 A109303` `Adjacent sequences: A073727 A073728 A073729 this_sequence A073731 A073732 A073733`
	KEYWORD	`nonn,base`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Aug 05 2002`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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