id:A067870 - OEIS Search Results

Search: id:A067870

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Numbers n such that n and 3^n end with the same digit.

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7, 13, 27, 33, 47, 53, 67, 73, 87, 93, 107, 113, 127, 133, 147, 153, 167, 173, 187, 193, 207, 213, 227, 233, 247, 253, 267, 273, 287, 293, 307, 313, 327, 333, 347, 353, 367, 373, 387, 393, 407, 413, 427, 433, 447, 453, 467, 473, 487, 493, 507, 513, 527, 533 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`3^13=1594323 hence 13 is in the sequence`
	FORMULA	`a(2n+1)=20n-13 a(2n)=20n-7`
	CROSSREFS	`Sequence in context: A111721 A060455 A072579 this_sequence A096194 A045463 A082221` `Adjacent sequences: A067867 A067868 A067869 this_sequence A067871 A067872 A067873`
	KEYWORD	`easy,nonn,base`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Mar 07 2002`

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

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