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Search: id:A086142
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A086142 a(n) = floor( ln(p)^2 ), where p=prime(n). +0
1
0, 1, 2, 3, 5, 6, 8, 8, 9, 11, 11, 13, 13, 14, 14, 15, 16, 16, 17, 18, 18, 19, 19, 20, 20, 21, 21, 21, 22, 22, 23, 23, 24, 24, 25, 25, 25, 25, 26, 26, 26, 27, 27, 27, 27, 28, 28, 29, 29, 29, 29, 29, 30, 30, 30, 31, 31, 31, 31, 31, 31, 32, 32, 32, 33, 33, 33, 33, 34, 34, 34, 34 (list; graph; listen)
OFFSET

1,3

EXAMPLE

a(5)=5: floor(square(ln 11)) because ln (11) = 2.3979 and square(2.3979) = 5.74992

MATHEMATICA

Table[ Floor[ Log[ Prime[n]]^2], {n, 1, 60}]

CROSSREFS

Sequence in context: A067183 A036587 A075145 this_sequence A039249 A039191 A049386

Adjacent sequences: A086139 A086140 A086141 this_sequence A086143 A086144 A086145

KEYWORD

easy,nonn

AUTHOR

Yang Sok Kim (yangsokk(AT)utas.edu.au), Aug 24 2003

EXTENSIONS

More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 01 2003

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Last modified November 21 14:49 EST 2008. Contains 150807 sequences.


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