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A135368 (Nextprime(12n)-previousprime(12n))/2. 4
1, 3, 3, 3, 1, 1, 3, 4, 1, 7, 3, 5, 3, 3, 1, 1, 6, 6, 1, 1, 3, 3, 3, 5, 7, 1, 7, 3, 1, 4, 3, 3, 4, 4, 1, 1, 3, 4, 6, 4, 4, 3, 6, 9, 9, 5, 3, 3, 3, 1, 3, 6, 5, 3, 1, 6, 4, 5, 4, 4, 3, 4, 3, 4, 7, 5, 6, 5, 1, 7, 7, 7, 7, 10, 10, 4, 5, 4, 3, 7, 3, 4, 3, 6, 1, 1, 5, 5, 3, 9, 1, 3, 4, 3, 11, 1, 4, 5, 3, 4, 6, 3, 3, 6 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

a(n)=1 if 12n -/+ 1 are twin primes. Corresponding n's are in A124519: 1,5,6,9,15,16,19,20,26,29,35,36,50,...

CROSSREFS

Cf. A124519, A135023.

Sequence in context: A064353 A190906 A080311 * A172358 A119560 A172364

Adjacent sequences:  A135365 A135366 A135367 * A135369 A135370 A135371

KEYWORD

nonn

AUTHOR

Zak Seidov (zakseidov(AT)yahoo.com), Feb 17 2008

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Last modified February 17 16:49 EST 2012. Contains 206058 sequences.