The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A132194 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A132194

a(n) = 1 if n-th prime is 0 or 2 mod 3, otherwise 0.
(history; published version)

#29 by Charles R Greathouse IV at Thu Sep 08 08:45:31 EDT 2022

PROG

(MAGMAMagma) [(NthPrime(n) mod 3) eq 1 select 0 else 1: n in [1..200]]; // G. C. Greubel, May 21 2019

Discussion

Thu Sep 08

08:45

OEIS Server: https://oeis.org/edit/global/2944

#28 by R. J. Mathar at Thu Jun 06 09:59:31 EDT 2019

STATUS

editing

approved

#27 by R. J. Mathar at Thu Jun 06 09:54:08 EDT 2019

FORMULA

a(n) = 1-A099618(n). - R. J. Mathar, Jun 06 2019

CROSSREFS

Cf. A039701, A130198, A099618.

KEYWORD

nonn,easy

STATUS

approved

editing

#26 by N. J. A. Sloane at Tue May 21 17:27:05 EDT 2019

STATUS

editing

approved

#25 by N. J. A. Sloane at Tue May 21 17:27:04 EDT 2019

COMMENTS

Binary sequence based on the primes used : play it at a slower tempo to make a drum-like soundappreciate the irregularities.

STATUS

approved

editing

#24 by Sean A. Irvine at Tue May 21 15:32:46 EDT 2019

STATUS

reviewed

approved

#23 by Michel Marcus at Tue May 21 15:24:45 EDT 2019

STATUS

proposed

reviewed

#22 by Alois P. Heinz at Tue May 21 15:08:40 EDT 2019

STATUS

editing

proposed

#21 by Alois P. Heinz at Tue May 21 15:07:40 EDT 2019

PROG

(PARI) {a(n) = if(prime(n)%3==1, 0, 1)}; \\ _G. C. Greubel, _, May 21 2019

Discussion

Tue May 21

15:08

Alois P. Heinz: signatures were nonclickable, ..., changed it

#20 by Alois P. Heinz at Tue May 21 15:07:12 EDT 2019

PROG

(MAGMA) [(NthPrime(n) mod 3) eq 1 select 0 else 1: n in [1..200]]; // _G. C. Greubel, _, May 21 2019

[a(n) for n in (1..200)] # _G. C. Greubel, _, May 21 2019

STATUS

approved

editing