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A087668
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Indices of records in A087664.
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3
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8, 9, 11, 13, 15, 133, 2317, 39845, 108167, 46779959, 70246181, 248897669, 452691117, 1137506437, 3089581031
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| No other terms below 10^10.
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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(n) ; ) ; ) ; } - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Nov 25 2006
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CROSSREFS
| Cf. A087664, A087667.
Sequence in context: A120201 A188056 A128234 * A120176 A139049 A048590
Adjacent sequences: A087665 A087666 A087667 * A087669 A087670 A087671
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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(9)-a(15) from Max Alekseyev (maxale(AT)gmail.com), Jul 30 2011
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