id:A079107 - OEIS Search Results

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Number of digits of A077722(n) written in base 8.

+0
1

3, 4, 4, 5, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(5)=6 since A077722(5)=32833, which has an octal form of 100101 (6 digits).`
	MAPLE	`s := 0:for n from 1 to 7000 do b := convert(n, base, 2): q := sum(b[i]*8^(i-1), i=1..nops(b)): if(isprime(q)) then s := s+1:a[s] := nops(b):fi: od:seq(a[k], k=1..s);`
	CROSSREFS	`Cf. A077722.` `Sequence in context: A133196 A059183 A054760 this_sequence A023963 A121500 A113455` `Adjacent sequences: A079104 A079105 A079106 this_sequence A079108 A079109 A079110`
	KEYWORD	`nonn`
	AUTHOR	`Francois Jooste (phukraut(AT)hotmail.com), Dec 23 2002`
	EXTENSIONS	`More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Feb 10 2003`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

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