%I #2 Mar 30 2012 18:34:45
%S 5,6,6,7,8,9,10,11,12,13,15,16,18,20,22,25,28,31,34,38,42,47,52,58,64,
%T 71,79,88,98,109,121,134,149,166,184,205,227,253,281,312
%N a(1)=5; a(n)=floor((49+sum(a(1) to a(n-1)))/9).
%Y Cf. A073941, A112088, A072493.
%K nonn
%O 1,1
%A _Graeme McRae_, Jun 10 2006