%I #14 May 14 2018 11:12:02
%S 1,2,3,4,6,7,9,12,13,14,18,60
%N Numbers from the "octagonal theorem of sixty".
%H Jangwon Ju, <a href="https://arxiv.org/abs/1805.03434">Universal sums of generalized pentagonal numbers</a>, arXiv:1805.03434 [math.NT], 2018 (see page 2).
%H Jangwon Ju and Byeong-Kweon Oh, <a href="https://arxiv.org/abs/1704.08826">Universal sums of generalized pentagonal numbers</a>, arXiv:1704.08826 [math.NT], 2017 (see page 6, Theorem 3.1).
%Y Cf. A030050, A030051, A116582, A154363, A304204.
%K nonn,fini,full
%O 1,2
%A _Vincenzo Librandi_, May 11 2018