id:A020645 - OEIS Search Results

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A020645

Least positive integer k for which 4^n divides k!.

+0
1

1, 4, 6, 8, 10, 12, 16, 16, 18, 20, 24, 24, 28, 30, 32, 32, 34, 36, 40, 40, 44, 46, 48, 48, 52, 54, 56, 58, 60, 64, 64, 64, 66, 68, 72, 72, 76, 78, 80, 80, 84, 86, 88, 90, 92, 96, 96, 96, 100, 102, 104, 106, 108, 112, 112, 114, 116, 120, 120, 124, 126, 128, 128, 128, 130, 132, 136 (list; graph; listen)

	OFFSET	`0,2`
	LINKS	`T. D. Noe, Table of n, a(n) for n=0..1000`
	CROSSREFS	`Sequence in context: A050990 A161546 A167179 this_sequence A051756 A053226 A074827` `Adjacent sequences: A020642 A020643 A020644 this_sequence A020646 A020647 A020648`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

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