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Search: id:A135728
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| 0, 1, 3, 5, 9, 17, 33, 65, 129, 153, 321, 1425, 1601, 1889, 3393, 4097, 6929, 8193
(list; graph; listen)
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OFFSET
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1,3
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COMMENT
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This gives indices n for which A135727(n) is larger than all preceding values of that sequence. As in A135727(n), we include the fixed point 0 in the domain of A001281. Obviously, many but not all entries are of the form 2^k+1, and not all of such numbers are in the sequence (e.g. 257, 1025, 2049 are missing). Is there a simple way of characterizing the exceptions?
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PROGRAM
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(PARI) A135728(Nmax=10^4)=local(m=-1); for(n=0, Nmax, if(m+0<m=max(m, A135727(n)), print1(n", ")))
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CROSSREFS
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Cf. A001281, A037084, A039500-A039505, A135727-A135730. A006370, A006577.
Adjacent sequences: A135725 A135726 A135727 this_sequence A135729 A135730 A135731
Sequence in context: A000213 A074858 A074860 this_sequence A083318 A127904 A048578
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KEYWORD
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more,nonn
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AUTHOR
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M. F. Hasler (Maximilian.Hasler(AT)gmail.com), Nov 26 2007
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