cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A201915 Each row of triangle T(n,k) has a sorted list of n values such that sigma(T(n,k)) = A007368(n).

This page as a plain text file.
%I A201915 #10 Oct 22 2013 18:47:28
%S A201915 1,6,11,14,15,23,42,62,69,77,30,46,51,55,71,60,78,92,123,143,167,114,
%T A201915 135,158,177,203,209,239,132,140,182,188,195,249,287,299,120,174,184,
%U A201915 190,267,295,319,323,359,204,220,224,246,284,286,334,415,451,503
%N A201915 Each row of triangle T(n,k) has a sorted list of n values such that sigma(T(n,k)) = A007368(n).
%C A201915 The first and last terms of each row are given in A184393 and A184394.
%C A201915 Note that the integers in the 10th row have sigma(n)=504 (A180164(1)) and thus include A002025(1) and A002046(1). - _Michel Marcus_, Oct 22 2013
%H A201915 T. D. Noe, <a href="/A201915/b201915.txt">Rows n = 1..100 of triangle, flattened</a>
%e A201915 Triangle:
%e A201915 1
%e A201915 6,    11
%e A201915 14,   15,  23
%e A201915 42,   62,  69,  77
%e A201915 30,   46,  51,  55,  71
%e A201915 60,   78,  92, 123, 143, 167
%e A201915 114, 135, 158, 177, 203, 209, 239
%e A201915 132, 140, 182, 188, 195, 249, 287, 299
%e A201915 120, 174, 184, 190, 267, 295, 319, 323, 359
%e A201915 204, 220, 224, 246, 284, 286, 334, 415, 451, 503
%K A201915 nonn,tabl
%O A201915 1,2
%A A201915 _T. D. Noe_, Jan 24 2012