The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A206936

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A206936

T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 horizontally and 0 1 1 vertically
(history; published version)

#5 by Russ Cox at Sat Mar 31 12:37:14 EDT 2012

AUTHOR

_R. H. Hardin (rhhardin(AT)att.net) _ Feb 13 2012

Discussion

Sat Mar 31

12:37

OEIS Server: https://oeis.org/edit/global/875

#4 by Ron Hardin at Mon Feb 13 17:59:42 EST 2012

STATUS

editing

approved

#3 by Ron Hardin at Mon Feb 13 17:59:38 EST 2012

LINKS

R. H. Hardin, <a href="/A206936/b206936.txt">Table of n, a(n) for n = 1..312</a>

#2 by Ron Hardin at Mon Feb 13 17:59:16 EST 2012

NAME

allocated for Ron HardinT(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 horizontally and 0 1 1 vertically

DATA

2, 4, 4, 7, 16, 7, 13, 49, 49, 12, 24, 169, 211, 144, 20, 44, 576, 1153, 811, 400, 33, 81, 1936, 6139, 6837, 2791, 1089, 54, 149, 6561, 31529, 55088, 35277, 9055, 2916, 88, 274, 22201, 165783, 410000, 418876, 170409, 28081, 7744, 143, 504, 75076, 867545

OFFSET

1,1

COMMENTS

Table starts

..2....4.....7......13........24.........44..........81...........149

..4...16....49.....169.......576.......1936........6561.........22201

..7...49...211....1153......6139......31529......165783........867545

.12..144...811....6837.....55088.....410000.....3227589......25102409

.20..400..2791...35277....418876....4293648....48992069.....546661165

.33.1089..9055..170409...2967939...40316253...659747611...10405676997

.54.2916.28081..783557..20054092..348614952..8138711727..180107729045

.88.7744.84403.3498981.132811808.2858059128.95444167901.2968348851593

EXAMPLE

Some solutions for n=4 k=3

..0..0..1....1..1..1....0..1..1....1..1..0....0..0..1....0..0..1....0..1..0

..0..1..1....1..1..0....1..1..0....0..0..1....0..0..1....0..0..1....1..0..1

..0..0..1....1..0..1....0..1..1....0..1..0....0..0..1....1..0..1....0..1..0

..0..1..0....1..1..0....1..0..0....0..0..1....1..1..1....0..0..1....1..0..0

CROSSREFS

Column 1 is A000071(n+3)

Column 2 is A188516

Row 1 is A000073(n+3)

Row 2 is A085697(n+1)

Row 3 is A206872

KEYWORD

allocated

nonn,tabl

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) Feb 13 2012

STATUS

approved

editing

#1 by Ron Hardin at Mon Feb 13 17:53:27 EST 2012

NAME

allocated for Ron Hardin

KEYWORD

allocated

STATUS

approved