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%I #2 Mar 31 2012 13:46:50
%S 1,8,18,19,20,70,71,81,82,92,98,108,118,128,138,148,158,168,178,188,
%T 198,199,209,219,229,239,249,259,269,279,289,290,700,710,720,730,740,
%U 750,760,770,780,790,791,801,811,821,831,841,851,861,871,881,891,892,902
%N Slowest increasing sequence where the absolute difference between the last digit of a(n) and the first digit of a(n+1) equals 7.
%K base,easy,nonn
%O 1,2
%A _Eric Angelini_, Dec 16 2004
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