[seqfan] Re: a question about triangular numbers

[Richard Mathar]

To nuture the ideas of
http://list.seqfan.eu/pipermail/seqfan/2009-December/003191.html 
we have a b-file in  http://www.strw.leidenuniv.nl/~mathar/progs/B003186
and a picture in http://www.strw.leidenuniv.nl/~mathar/progs/B003186.gif 
which can be generated by

gnuplot <<++
	set terminal gif
	set output "B003186.gif"
	plot "B003186"
++