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Numbers not of form p + 2^x + 2^y.
(Formerly M0925)
1

%I M0925 #30 Jul 28 2024 00:08:46

%S 1,2,3,128,150,252,332,338,374,510,600,702,758,810,878,906,908,960,

%T 978,998,1020,1088,1200,1208,1212,1244,1260,1272,1478,1530,1542,1550,

%U 1590,1598,1620,1650,1658,1720,1760,1778,1784,1808,1830,1860,1868

%N Numbers not of form p + 2^x + 2^y.

%D Jeffrey Shallit, personal communication.

%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

%H Sean A. Irvine, <a href="/A006286/b006286.txt">Table of n, a(n) for n = 1..1000</a>

%H Thomas Bloom, <a href="https://www.erdosproblems.com/9">Problem 9</a>

%H 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 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.

%Y Cf. A006285, A156695.

%K nonn

%O 1,2

%A _N. J. A. Sloane_.

%E More terms from _Sean A. Irvine_, Feb 22 2017