%I #2 Mar 31 2012 10:28:53
%S 1,2,2,3,2,3,2,5,5,1,5,7,10,6,5,6,6,17,2,11,6,7,6,23,19,13,17,7,2,13,
%T 29,42,2,30,6,2,3,15,42,71,22,2,6,2,1,10,6,57,113,93,6,2,2,3,10,11,2,
%U 21,170,206,33,2,2,5,13,11,6,13,23,191,94,239,35,2,7,6,6,3
%N Triangle read by rows: rad(n) along left edge (n, 1) and core(n) along right edge (n, n), with (n, k) = rad((n - 1, k - 1) + (n - 1, k)) for 1 < k < n when n > 2.
%Y Cf. A007913, A007947, A144909
%K easy,nonn,tabl
%O 1,2
%A _Reikku Kulon_, Sep 24 2008