id:A090080 - OEIS Search Results

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In binary expansion of n-th prime: reduce contiguous blocks of 0's to 0 and contiguous blocks of 1's to 1.

+0
2

2, 1, 5, 1, 5, 5, 5, 5, 5, 5, 1, 21, 21, 21, 5, 21, 5, 5, 5, 5, 21, 5, 21, 21, 5, 21, 5, 21, 21, 5, 1, 5, 21, 21, 85, 21, 21, 21, 21, 85, 21, 85, 5, 5, 21, 5, 21, 5, 5, 21, 21, 5, 5, 5, 5, 5, 21, 5, 85, 21, 21, 85, 21, 21, 21, 21, 85, 85, 85, 85, 21, 21, 21, 85, 21, 5, 21, 21, 21 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`a(n) = A090079(A000040(n)).`
	EXAMPLE	`A000040(25)=97 -> '1100001' -> [11][0000][1] -> [1][0][1] ->` `'101' -> 5=a(25).`
	CROSSREFS	`Cf. A004676.` `Adjacent sequences: A090077 A090078 A090079 this_sequence A090081 A090082 A090083` `Sequence in context: A069359 A014652 A060448 this_sequence A014650 A014648 A036073`
	KEYWORD	`nonn,base`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Nov 20 2003`

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Last modified October 15 20:12 EDT 2008. Contains 145099 sequences.

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