id:A025720 - OEIS Search Results

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Index of 7^n within sequence of numbers of form 2^i*7^j.

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1, 4, 10, 19, 31, 46, 63, 83, 106, 132, 161, 192, 226, 263, 303, 346, 391, 439, 490, 544, 601, 660, 722, 787, 855, 926, 999, 1075, 1154, 1236, 1321, 1409, 1499, 1592, 1688, 1787, 1889, 1993, 2100, 2210, 2323, 2439, 2557, 2678, 2802, 2929, 3059, 3191, 3326 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Sequence in context: A008038 A160425 A152946 this_sequence A022793 A005448 A037040` `Adjacent sequences: A025717 A025718 A025719 this_sequence A025721 A025722 A025723`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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