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.
%I A373646 #7 Jun 12 2024 10:26:47 %S A373646 10,11,14,15,23,27,35,39,44,45,47,51,62,68,70,76,77,86,92,94,95,103, %T A373646 110,119,125,134,137,143,149,152,153,165,170,175,182,187,202,203,206, %U A373646 215,223,230,233,236,239,263,283,284,287,299,314,317,319,329,332,335 %N A373646 Positive integers that cannot be written as a sum of a practical number and an 18-gonal number. %C A373646 Somu and Tran (2024) conjectured that there are finitely many such integers. It was also conjectured that 8541224 is the largest such integer. This conjecture was checked up to 10^8. %H A373646 Duc Van Khanh Tran, <a href="/A373646/b373646.txt">Table of n, a(n) for n = 1..1020</a> %H A373646 Sai Teja Somu and Duc Van Khanh Tran, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL27/Somu/somu5.html">On sums of practical numbers and polygonal numbers</a>, Journal of Integer Sequences, 27(5), 2024. %Y A373646 Cf. A005153, A051870. %K A373646 nonn,hard %O A373646 1,1 %A A373646 _Duc Van Khanh Tran_, Jun 12 2024