id:A048991 - OEIS Search Results

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Write down the numbers 1,2,3,... but omit any number (such as 12 or 23 or 31 ...) which has appeared as a string earlier in the sequence.

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9

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25, 26, 27, 28, 29, 30, 32, 33, 35, 36, 37, 38, 39, 40, 43, 44, 46, 47, 48, 49, 50, 54, 55, 57, 58, 59, 60, 65, 66, 68, 69, 70, 76, 77, 79, 80, 87, 88, 90, 99, 100, 102, 103, 104, 105, 106, 107, 108, 109, 110, 112 (list; graph; listen)

	OFFSET	`1,2`
	REFERENCES	`Invented by 10-year-old Hannah Rollman.`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..10000` `Nick Hobson, Python program for this sequence`
	EXAMPLE	`12 is omitted since we see "1,2" at the beginning of the sequence; 101 is omitted because we can see "10,1[1]"; etc.`
	CROSSREFS	`See A048992 for the omitted numbers.` `Cf. A105390.` `Sequence in context: A031996 A023753 A035332 this_sequence A131881 A053460 A065200` `Adjacent sequences: A048988 A048989 A048990 this_sequence A048992 A048993 A048994`
	KEYWORD	`nonn,nice,base,easy`
	AUTHOR	`Bernardo Recaman (ignotus(AT)hotmail.com)`
	EXTENSIONS	`Edited by Patrick De Geest, Jun 02 2003`

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.

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