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A066643
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Floor[area of a circle with radius n].
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6
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3, 12, 28, 50, 78, 113, 153, 201, 254, 314, 380, 452, 530, 615, 706, 804, 907, 1017, 1134, 1256, 1385, 1520, 1661, 1809, 1963, 2123, 2290, 2463, 2642, 2827, 3019, 3216, 3421, 3631, 3848, 4071, 4300, 4536, 4778, 5026, 5281, 5541, 5808, 6082, 6361, 6647
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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Harry J. Smith, Table of n, a(n) for n=1,...,1000
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FORMULA
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Floor[pi*n^2].
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MATHEMATICA
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Table[ Floor[Pi*n^2], {n, 1, 50} ]
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PROG
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(PARI) { for (n=1, 1000, write("b066643.txt", n, " ", floor(Pi*n^2)) ) } [From Harry J. Smith, Mar 15 2010]
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CROSSREFS
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Sequence in context: A083538 A060781 A083539 * A140065 A115549 A005995
Adjacent sequences: A066640 A066641 A066642 * A066644 A066645 A066646
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KEYWORD
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easy,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Dec 29 2001
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EXTENSIONS
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Corrected and extended by Robert G. Wilson v, Jan 03 2002
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STATUS
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approved
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