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%I #67 Mar 28 2018 22:02:57
%S 1,2,3,8,9,10,12,20,27,30,34,39,41,42,69,78,100,122,137,262,315,587,
%T 609,631,758,890,1083,1092,1114,1364,1373
%N Successively larger gaps between Ulam numbers.
%C The lower term of the gaps is in A080287.
%H Philip Gibbs, Judson McCranie, <a href="https://www.researchgate.net/profile/Philip_Gibbs/publication/320980165_The_Ulam_Numbers_up_to_One_Trillion/links/5a058786aca2726b4c78588d/The-Ulam-Numbers-up-to-One-Trillion.pdf">The Ulam Numbers up to One Trillion</a>, (2017).
%e 87 and 97 are successive Ulam numbers and this is the first gap of 10 or larger, so 10 is in the sequence.
%Y Cf. A002858, A080287, A214603, A274522.
%K nonn,more,hard
%O 1,2
%A _Jud McCranie_, Feb 12 2003
%E 23rd term found by _Don Knuth_ - _Jud McCranie_, Aug 22 2008
%E a(24) on Feb 29 2012; a(25) on Jul 20 2012; and a(26) on Jul 24 2012 found by _Jud McCranie_;
%E a(27) found by Philip Gibbs, Sep 02 2015
%E a(28) found by Philip Gibbs and _Jud McCranie_, Sep 09 2015
%E a(29) found by Philip Gibbs, Oct 2017
%E a(30) found by Philip Gibbs, Oct 16 2017
%E a(31) found by Philip Gibbs, Oct 20 2017
%E Missing a(23) inserted by _Jud McCranie_, Oct 24 2017
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