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A097426 Integer part of the circumference of circles with prime diameters. +0
1
6, 9, 15, 21, 34, 40, 53, 59, 72, 91, 97, 116, 128, 135, 147, 166, 185, 191, 210, 223, 229, 248, 260, 279, 304, 317, 323, 336, 342, 354, 398, 411, 430, 436, 468, 474, 493, 512, 524, 543, 562, 568, 600, 606, 618, 625, 662, 700, 713, 719, 731, 750, 757, 788, 807 (list; graph; listen)
OFFSET

2,1

FORMULA

Circumference = Pi*D.

EXAMPLE

If D = 11. floor(Pi*11) = 34, the 5-th entry.

PROGRAM

(PARI) f(n) = forprime(x=1, n, print1(floor(Pi*x)", "))

CROSSREFS

Adjacent sequences: A097423 A097424 A097425 this_sequence A097427 A097428 A097429

Sequence in context: A020648 A020147 A001748 this_sequence A075278 A102971 A023885

KEYWORD

nonn

AUTHOR

Cino Hilliard (hillcino368(AT)gmail.com), Aug 22 2004

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.


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