%I #12 Feb 17 2024 10:29:26
%S 19,210,311,412,513,614,715,816,917,1018,1119,1220,1321,1422,1523,
%T 1624,1725,1826,1927,2028,2129,2230,2331,2432,2533,2634,2735,2836,
%U 2937,3038,3139,3240,3341,3442,3543,3644,3745,3846,3947,4048,4149
%N Concatenation of n and n + 8 or {n,n+8}.
%Y Cf. A001704, A020338.
%K nonn,base
%O 1,1
%A _Patrick De Geest_, May 15 1998