|
%I #5 Dec 15 2017 17:36:03
%S 0,1,1,0,1,0,1,0,0,4,1,3,6,7,9,12,14,15,17,8,3,0,3,4,6,9,11,13,15,9,6,
%T 3,0,3,5,7,10,11,12,10,7,4,3,0,2,4,7,8,9,13,9,6,5,2,0,2,5,7,8,14,12,9,
%U 7,4,2,0,3,4,5,16,14,11,10,7,5,3,0,2,4,18,15,13,11,8,7,4,2,0,2,20,17
%N Number of primes between n and R(n) (inclusive), where R(n) (A004086) is the digit reversal of n.
%C A060568 is the exclusive version of this sequence.
%e The primes between n = 13 and 31, inclusive, are 13, 17, 19, 23, 29, 31; so a(13) = 6.
%K base,easy,nonn
%O 1,10
%A _Jason Earls_, Sep 08 2002
|
