The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A181932

(Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing all changes.

A181932

A003136(n) mod 2.
(history; published version)

#6 by Charles R Greathouse IV at Wed Jul 05 15:11:27 EDT 2017

STATUS

editing

approved

#5 by Charles R Greathouse IV at Wed Jul 05 15:11:25 EDT 2017

LINKS

Charles R Greathouse IV, <a href="/A181932/b181932.txt">Table of n, a(n) for n = 1..10000</a>

PROG

(PARI) do(lim)=my(v=List(), y, t); for(x=0, sqrtint(lim\3), my(y=x, t); while((t=x^2+x*y+y^2)<=lim, listput(v, t); y++)); Set(v)%2 \\ Charles R Greathouse IV, Jul 05 2017

STATUS

approved

editing

#4 by N. J. A. Sloane at Mon Apr 02 16:25:39 EDT 2012

STATUS

editing

approved

#3 by N. J. A. Sloane at Mon Apr 02 16:25:36 EDT 2012

NAME

allocated for N. J. A. Sloane

A003136(n) mod 2.

DATA

0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 0, 1

OFFSET

1

KEYWORD

allocated

nonn

AUTHOR

N. J. A. Sloane, Apr 02 2012

STATUS

approved

editing

#2 by N. J. A. Sloane at Mon Apr 02 16:25:36 EDT 2012

NAME

allocated for N. J. A. Sloane

KEYWORD

recycled

allocated

#1 by Russ Cox at Fri Mar 30 17:02:39 EDT 2012

KEYWORD

recycled

STATUS

approved