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A163119
Absolute values of the first differences in the digit chain of the concatenated primes.
0
1, 2, 2, 6, 0, 0, 2, 2, 6, 6, 8, 7, 1, 1, 7, 6, 2, 2, 4, 3, 3, 3, 1, 1, 3, 2, 2, 2, 4, 3, 5, 5, 1, 0, 6, 6, 4, 4, 2, 1, 5, 5, 1, 0, 2, 6, 1, 1, 0, 1, 3, 2, 1, 7, 6, 1, 9, 8, 0, 2, 2, 1, 5, 6, 2, 2, 0, 2, 4, 6, 2, 6, 8, 3, 5, 8, 4, 4, 0, 4, 2, 6, 5, 3, 2, 5, 1, 6, 6, 4, 2, 6, 2, 8, 7, 7, 0, 8, 8, 0, 8, 6, 2, 8, 2
OFFSET
1,2
FORMULA
a(n) = |A033308(n) - A033308(n-1)|.
MAPLE
read("transforms3") ; L := BFILETOLIST("b033308.txt") ; for i from 2 to 120 do printf("%d, ", abs(op(i, L)-op(i-1, L))) ; od: # R. J. Mathar, Jul 27 2009
CROSSREFS
Sequence in context: A158311 A158061 A270546 * A091085 A011144 A127649
KEYWORD
nonn,base
AUTHOR
EXTENSIONS
a(21) corrected by R. J. Mathar, Jul 27 2009
STATUS
approved