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A158209
The number of consecutive prime pairs with 10-gap in n-th century.
0
0, 2, 2, 1, 2, 2, 1, 2, 2, 1, 3, 2, 1, 0, 1, 0, 1, 1, 2, 0, 4, 1, 0, 0, 0, 1, 1, 3, 1, 1, 1, 1, 0, 1, 0, 4, 0, 2, 2, 0, 0, 0, 6, 3, 1, 0, 1, 0, 1, 2, 1, 1, 0, 1, 0, 1, 1, 1, 1, 0, 1, 3, 2, 3, 1, 1, 1, 2, 0, 1, 1, 1, 1, 1, 1, 2, 0, 0, 0, 0, 1, 1, 2, 2, 0, 2, 0, 0, 2, 1, 1, 0, 1, 0, 2, 1, 1, 0, 0, 1, 1, 1, 0, 2, 1
OFFSET
1,2
EXAMPLE
Of 14 primes in 10th century, only 919 and 929 are consecutive primes with 10-gap, so a(10)=1.
CROSSREFS
Sequence in context: A131714 A130196 A230866 * A234538 A119646 A024693
KEYWORD
nonn
AUTHOR
Ki Punches, Mar 13 2009
EXTENSIONS
Edited and corrected by Ray Chandler, May 23 2009
STATUS
approved