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%I #9 Jul 06 2024 11:54:31
%S 3,4,5,3,3,16,38,9,75,11,149,186,3,260,297,9,1589,531,131,1475,514,
%T 41139,21604940,65359479,170677592,933706818,5378862,806321563,
%U 360633274,199660579,3220611916266,63890006966,975514583945,8944083
%N Values of k associated with A033705.
%H M. Keith, <a href="http://www.cs.uwaterloo.ca/journals/JIS/keith.html">On Repdigit Polygonal Numbers</a>, J. Integer Sequences, Vol. 1, 1998, #6.
%e A033705(1) = 6, and 6 is triangular (3 sides), so a(1)=3.
%e A033705(2) = 9, and 9 is square (4 sides), so a(2)=4.
%Y Cf. A033705, A033707.
%K nonn
%O 1,1
%A _Mike Keith_