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0, 2, 4, 5, 9, 12, 16, 24, 29, 30, 31, 32, 36, 37, 42
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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LINKS
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Table of n, a(n) for n=1..15.
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FORMULA
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a(n)=A087664(A087668(n)). - R. J. Mathar, Nov 25 2006
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PROG
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(PARI) A087664(n)={ local(x, s) ; x=n/4 ; s=0 ; while( type(x)!="t_INT", x *= floor(x) ; s++ ; ) ; return(s) ; } { rec=-1 ; for(n=8, 1000000, a=A087664(n) ; if(a>rec, rec=a ; print(rec) ; ) ; ) ; } - R. J. Mathar, Nov 25 2006
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CROSSREFS
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Cf. A087664, A087668.
Sequence in context: A295564 A236336 A239515 * A241444 A082592 A241339
Adjacent sequences: A087664 A087665 A087666 * A087668 A087669 A087670
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KEYWORD
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nonn,more
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AUTHOR
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N. J. A. Sloane, Sep 27 2003
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EXTENSIONS
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More terms from R. J. Mathar, Nov 25 2006
a(8)-a(15) from Max Alekseyev, Jul 30 2011
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STATUS
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approved
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