id:A048244 - OEIS Search Results

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A048106 is applied to A001405: the terms indicate whether more, equal or fewer unitary than non-unitary divisors of the central binomial coefficient exists.

+0
1

1, 2, 2, 4, 4, 2, 4, 8, 4, -2, 16, 8, 8, 0, 8, 16, 32, 16, 32, 16, 32, 0, 64, 32, -16, -64, -160, -256, -128, -224, 64, 128, 0, -256, 256, -128, -128, -512, 512, -256, 512, 0, 512, 0, -2048, -2816, -256, -1408, -1408, -2560, -2560, -4096, -1024, -1792, 2048 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`A048106[ A001405[ x ] ] or A034444[ A001405[ x ] ] - A048105[ A001405[ x ] ] gives the terms resp.`
	EXAMPLE	`n=54, binomial[ 54,27 ] has 3840 divisors of which 1024 are unitary and 2816 are not. The difference is 2816.`
	CROSSREFS	`Sequence in context: A049116 A065176 A060267 this_sequence A056673 A128442 A038674` `Adjacent sequences: A048241 A048242 A048243 this_sequence A048245 A048246 A048247`
	KEYWORD	`sign`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu)`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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