id:A132943 - OEIS Search Results

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Concatenation of first n imperfect numbers.

+0
2

1, 12, 123, 1234, 12345, 123457, 1234578, 12345789, 1234578910, 123457891011, 12345789101112, 1234578910111213, 123457891011121314, 12345789101112131415, 1234578910111213141516, 123457891011121314151617 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`O. E. Pol, Determinacion geometrica de los numeros primos y perfectos.`
	CROSSREFS	`Imperfect numbers: A132999. Cf. A000396, A007908, A019518, A132928.` `Adjacent sequences: A132940 A132941 A132942 this_sequence A132944 A132945 A132946` `Sequence in context: A138957 A007908 A057932 this_sequence A134802 A083429 A077306`
	KEYWORD	`easy,nonn,base`
	AUTHOR	`Omar E. Pol (info(AT)polprimos.com), Oct 16 2007`

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Last modified May 16 23:01 EDT 2008. Contains 139884 sequences.

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