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 A006286 M0925 #41 Sep 03 2025 14:29:01
%S A006286 1,2,3,128,150,252,332,338,374,510,600,702,758,810,878,906,908,960,
%T A006286 978,998,1020,1088,1200,1208,1212,1244,1260,1272,1478,1530,1542,1550,
%U A006286 1590,1598,1620,1650,1658,1720,1760,1778,1784,1808,1830,1860,1868
%N A006286 Numbers not of form p + 2^x + 2^y.
%D A006286 Jeffrey Shallit, personal communication.
%D A006286 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H A006286 Sean A. Irvine, <a href="/A006286/b006286.txt">Table of n, a(n) for n = 1..1000</a>
%H A006286 Thomas Bloom, <a href="https://www.erdosproblems.com/9">Problem 9</a>, Erdős Problems.
%H A006286 Roger Crocker, <a href="https://projecteuclid.org/journals/pacific-journal-of-mathematics/volume-36/issue-1/On-the-sum-of-a-prime-and-of-two-powers/pjm/1102971271.full">On the sum of a prime and of two powers of two</a>, Pacific J. Math. 36(1): 103-107 (1971).
%H A006286 Hao Pan, <a href="https://arxiv.org/abs/0905.3809">On the integers not of the form {$p+2^a+2^b$},</a>, arXiv:0905.3809 [math.NT], 2009.
%H A006286 Terence Tao, <a href="https://github.com/teorth/erdosproblems/blob/main/README.md#table">Erdős problem database</a>, see entry no. 9.
%Y A006286 Cf. A006285, A156695.
%K A006286 nonn,changed
%O A006286 1,2
%A A006286 _N. J. A. Sloane_
%E A006286 More terms from _Sean A. Irvine_, Feb 22 2017