id:A090000 - OEIS Search Results

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Length of longest contiguous block of 1's in binary expansion of n-th prime.

+0
5

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

	OFFSET	`1,2`
	COMMENT	`a(n) = A038374(A000040(n)).`
	MATHEMATICA	`f[n_] := Length[ Union[ DeleteCases[ Split[ IntegerDigits[n, 2]], 0, 2]][[ -1]]]; Table[ f[ Prime[n]], {n, 1, 105}] (from Robert G. Wilson v Dec 04 2003)`
	CROSSREFS	`Cf. A000120, A004676, A090001, A090002, A090003, A090046, A090593.` `Sequence in context: A057515 A096852 A096857 this_sequence A109082 A126303 A072339` `Adjacent sequences: A089997 A089998 A089999 this_sequence A090001 A090002 A090003`
	KEYWORD	`nonn,base`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Nov 20 2003`

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.

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