id:A084320 - OEIS Search Results

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Number of powers of two between 2 consecutive factorials (2! including).

+0
3

1, 1, 2, 2, 3, 3, 3, 3, 3, 4, 3, 4, 4, 4, 4, 4, 4, 4, 5, 4, 4, 5, 5, 4, 5, 5, 4, 5, 5, 5, 5, 5, 5, 5, 6, 5, 5, 5, 6, 5, 5, 6, 5, 6, 5, 6, 5, 6, 6, 5, 6, 6, 6, 5, 6, 6, 6, 6, 6, 6, 6, 5, 6, 7, 6, 6, 6, 6, 6, 6, 6, 6, 7, 6, 6, 6, 7, 6, 6, 7, 6, 6, 7, 6, 7, 6, 7, 6, 6, 7, 7, 6, 7, 6, 7, 6, 7, 7, 6, 7, 7, 6, 7, 7, 6 (list; graph; listen)

	OFFSET	`1,3`
	FORMULA	`a(n)=A067850[n+1]-A067850[n]`
	EXAMPLE	`n=7: a(7)=3 because between 5040 and 40320` `three powers of 2 occur :{8192,16384,32768}.`
	MATHEMATICA	`Table[Floor[Log[2, (w+1)! ]//N]-Floor[Log[2, w! ]//N], {w, 1, 128}]`
	CROSSREFS	`Cf. A067850, A058033, A000142, A000079.` `Sequence in context: A093125 A105047 A089881 this_sequence A120699 A072643 A130260` `Adjacent sequences: A084317 A084318 A084319 this_sequence A084321 A084322 A084323`
	KEYWORD	`easy,nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Jun 19 2003`

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Last modified July 26 23:19 EDT 2008. Contains 142293 sequences.

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