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A033702 Number of polygonal numbers which are n-digit repdigits. 1

%I #9 Nov 30 2014 04:19:09

%S 17,27,32,28,26,37,26,29,35,28,27,38,29,29,34,33,26,37,26,31,35,27,26,

%T 36,27,31,36,29,28,37,26,30,35,27,27,41,26,31,34,29,27,38,27,31,40,29,

%U 27,37,28,29

%N Number of polygonal numbers which are n-digit repdigits.

%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.

%K nonn,base

%O 1,1

%A Mike Keith (domnei(AT)aol.com)

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Last modified April 22 06:39 EDT 2024. Contains 371888 sequences. (Running on oeis4.)