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A035331 Base-1000 expansion of Pi. 4
3, 141, 592, 653, 589, 793, 238, 462, 643, 383, 279, 502, 884, 197, 169, 399, 375, 105, 820, 974, 944, 592, 307, 816, 406, 286, 208, 998, 628, 34, 825, 342, 117, 67, 982, 148, 86, 513, 282, 306, 647, 93, 844, 609, 550, 582, 231, 725, 359, 408, 128, 481, 117, 450 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Start with a(0)=3; other terms are formed from triples of successive digits in the decimal expansion of Pi.

This sequence can be considered as a (pseudo)random generator with range 0..999. Its scatterplot graph is very similar to that of other random generators, e.g., A096558. - M. F. Hasler, May 14 2015

LINKS

T. D. Noe, Table of n, a(n) for n = 0..10000

FORMULA

a(n) = floor(Pi*10^(3n)) mod 1000. - M. F. Hasler, May 14 2015

EXAMPLE

Pi = 3.141 592 653 589 793 238 462 643 383 279 502 884 197 169 399 375 105 ...

MATHEMATICA

RealDigits[Pi, 1000, 60][[1]] (* Harvey P. Dale, Nov 22 2015 *)

PROG

(PARI) default(realprecision, 3*N=100); vector(N, i, Pi\1000^(1-i)%1000) \\ or: {P=Pi; vector(N, i, P\1+0*P=frac(P)*1000)} or {P=Pi/1000; vector(N, i, floor(P=frac(P)*1000))}. \\ M. F. Hasler, May 11 2015

CROSSREFS

Cf. A000796, A016062, A037244, A050819, A032445, A064467.

Sequence in context: A191958 A224707 A288922 * A050819 A255190 A037121

Adjacent sequences:  A035328 A035329 A035330 * A035332 A035333 A035334

KEYWORD

nonn,base,easy,look

AUTHOR

Joerg Zurkirchen (joerg.zurkirchen(AT)credit-suisse.ch)

EXTENSIONS

More terms from Larry Reeves (larryr(AT)acm.org), Oct 04 2001

Better definition from Franklin T. Adams-Watters, Apr 10 2006

STATUS

approved

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Last modified June 24 06:17 EDT 2021. Contains 345416 sequences. (Running on oeis4.)