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0, 2, 4, 5, 9, 12, 16, 24, 29, 30, 31, 32, 36, 37, 42
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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FORMULA
| a(n)=A087664(A087668(n)). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Nov 25 2006
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PROG
| (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 (mathar(AT)strw.leidenuniv.nl), Nov 25 2006
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CROSSREFS
| Cf. A087664, A087668.
Sequence in context: A039871 A161375 A039021 * A082592 A039898 A083690
Adjacent sequences: A087664 A087665 A087666 * A087668 A087669 A087670
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KEYWORD
| nonn,more
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Sep 27 2003
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EXTENSIONS
| More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Nov 25 2006
a(8)-a(15) from Max Alekseyev (maxale(AT)gmail.com), Jul 30 2011
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