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%I #5 Mar 03 2019 14:35:59
%S 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,
%T 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,
%U 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
%N Absolute values of the first differences in the digit chain of the concatenated primes.
%F a(n) = |A033308(n) - A033308(n-1)|.
%p 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
%Y Cf. A000040, A033308.
%K nonn,base
%O 1,2
%A _Juri-Stepan Gerasimov_, Jul 21 2009
%E a(21) corrected by _R. J. Mathar_, Jul 27 2009