id:A090418 - OEIS Search Results

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Number of ways to write n in binary representation as concatenation of primes.

+0
7

0, 1, 1, 0, 1, 0, 1, 0, 0, 0, 2, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 3, 0, 0, 0, 0, 0, 2, 0, 3, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 2, 0, 2, 0, 4, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 2, 0, 3, 0, 2, 0, 0, 0, 1, 0, 0, 0, 2, 0, 1, 0, 0, 0, 0, 0, 2, 0, 1, 0, 2, 0, 0, 0, 2, 0, 1, 0, 1, 0, 4, 0, 6, 0, 1, 0, 0, 0, 1, 0 (list; graph; listen)

	OFFSET	`1,11`
	COMMENT	`a(A090419(n))=0; a(A090420(n))=1; a(A090421(n))>0;` `a(A090422(n))=1; a(A090423(n))>1;` `a(A090424(n)) = n and a(m) <> n for m < A090424(n).`
	EXAMPLE	`n=23 -> '10111': '10"111'==2"7, '101"11'==5"3 and '10111'==23,` `therefore a(23)=3.`
	CROSSREFS	`Cf. A004676, A007088.` `Sequence in context: A065717 A070092 A123671 this_sequence A160804 A085854 A117145` `Adjacent sequences: A090415 A090416 A090417 this_sequence A090419 A090420 A090421`
	KEYWORD	`nonn,base`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Nov 30 2003`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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