The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A287124 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A287124

Positions of 2 in A287121.
(history; published version)

#5 by N. J. A. Sloane at Tue May 23 14:32:16 EDT 2017

STATUS

reviewed

approved

#4 by Anton Mosunov at Tue May 23 13:12:47 EDT 2017

STATUS

proposed

reviewed

#3 by Clark Kimberling at Tue May 23 10:05:49 EDT 2017

STATUS

editing

proposed

#2 by Clark Kimberling at Mon May 22 21:53:02 EDT 2017

NAME

allocated for Clark KimberlingPositions of 2 in A287121.

DATA

1, 3, 7, 9, 16, 20, 22, 26, 28, 35, 45, 49, 51, 58, 62, 64, 68, 70, 77, 81, 83, 87, 89, 96, 106, 110, 112, 119, 129, 139, 143, 145, 152, 156, 158, 162, 164, 171, 181, 185, 187, 194, 198, 200, 204, 206, 213, 217, 219, 223, 225, 232, 242, 246, 248, 255, 259

OFFSET

1,2

LINKS

Clark Kimberling, <a href="/A287124/b287124.txt">Table of n, a(n) for n = 1..10000</a>

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {1, 0}, 1 -> {2, 0}, 2 -> 1}] &, {0}, 12] (* A287121 *)

Flatten[Position[s, 0]] (* A287122 *)

Flatten[Position[s, 1]] (* A287123 *)

Flatten[Position[s, 2]] (* A287124 *)

CROSSREFS

Cf. A287121, A287122, A287123.

KEYWORD

allocated

nonn,easy

AUTHOR

Clark Kimberling, May 22 2017

STATUS

approved

editing

#1 by Clark Kimberling at Sat May 20 08:50:46 EDT 2017

NAME

allocated for Clark Kimberling

KEYWORD

allocated

STATUS

approved