

A090909


Terms a(k) of A073869 for which a(k1), a(k) and a(k+1) are distinct.


3



0, 2, 5, 7, 10, 13, 15, 18, 20, 23, 26, 28, 31, 34, 36, 39, 41, 44, 47, 49, 52, 54, 57, 60, 62, 65, 68, 70, 73, 75, 78, 81, 83, 86, 89, 91, 94, 96, 99, 102, 104, 107, 109, 112, 115, 117, 120, 123, 125, 128, 130, 133, 136, 138, 141, 143, 146, 149, 151, 154, 157, 159, 162
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OFFSET

0,2


COMMENTS

Apart from the initial 0, is this the same as A001950?  Alec Mihailovs (alec(AT)mihailovs.com), Jul 23 2007
Identical to n + A066096(n)? [Ed Russell (times145(AT)hotmail.com), May 09 2009]
All listed terms of this sequence can be produced by the formula a(n)=floor(Phi^2*n), where phi = (1+sqrt(5))/2. [Gary Detlefs, Mar 10 2011]


LINKS

Table of n, a(n) for n=0..62.


CROSSREFS

Cf. A002251, A005206, A073869, A090908.
Sequence in context: A188036 A292645 A001950 * A022841 A038127 A047480
Adjacent sequences: A090906 A090907 A090908 * A090910 A090911 A090912


KEYWORD

nonn,less


AUTHOR

Amarnath Murthy, Dec 14 2003


EXTENSIONS

More terms from R. J. Mathar, Sep 29 2017


STATUS

approved



