The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A184234 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A184234

Number of strings of numbers x(i=1..n) in 0..3 with sum i^2*x(i)^2 equal to n^2*9
(history; published version)

#5 by Russ Cox at Sat Mar 31 12:35:58 EDT 2012

AUTHOR

_R. H. Hardin (rhhardin(AT)att.net) _ Jan 10 2011

Discussion

Sat Mar 31

12:35

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

#4 by Ron Hardin at Mon Jan 10 10:35:19 EST 2011

STATUS

proposed

approved

#3 by Ron Hardin at Mon Jan 10 10:35:04 EST 2011

LINKS

R. H. Hardin, <a href="/A184234/b184234.txt">Table of n, a(n) for n = 1..52</a>

#2 by Ron Hardin at Mon Jan 10 10:34:32 EST 2011

NAME

allocated for Ron HardinNumber of strings of numbers x(i=1..n) in 0..3 with sum i^2*x(i)^2 equal to n^2*9

DATA

1, 1, 2, 1, 5, 5, 41, 36, 199, 420, 1377, 4140, 10728, 36839, 87400, 283225, 660812, 1940633, 4609045, 12276261, 29878104, 73822900, 181872899, 428160287, 1053371836, 2416581766, 5864707345, 13309989382, 31614183273, 71451195226

OFFSET

1,3

COMMENTS

Column 3 of A184240

EXAMPLE

All solutions for n=5

..3....0....2....0....3

..3....0....2....0....2

..2....0....2....3....2

..3....0....3....3....2

..0....3....1....0....2

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) Jan 10 2011

STATUS

approved

proposed

#1 by Ron Hardin at Mon Jan 10 10:30:14 EST 2011

NAME

allocated for Ron Hardin

KEYWORD

allocated

STATUS

approved