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Revision History for A278430 (Underlined text is an addition; strikethrough text is a deletion.)

Showing all changes.
A278430 Number of nX2 0..3 arrays with rows and columns in lexicographic nondecreasing order but with exactly one mistake.
(history; published version)
#5 by R. H. Hardin at Tue Nov 22 06:51:17 EST 2016
STATUS

editing

approved

#4 by R. H. Hardin at Tue Nov 22 06:51:12 EST 2016
LINKS

R. H. Hardin, <a href="/A278430/b278430.txt">Table of n, a(n) for n = 1..210</a>

R. H. Hardin, <a href="/A278430/a278430.txt">Empirical polynomial of degree 31</a>

#3 by R. H. Hardin at Tue Nov 22 06:50:01 EST 2016
NAME

allocated for R. H. Hardin

Number of nX2 0..3 arrays with rows and columns in lexicographic nondecreasing order but with exactly one mistake.

DATA

6, 100, 1609, 19624, 178352, 1287838, 7795151, 41058743, 193149285, 826734193, 3264405727, 12016477160, 41579224479, 136142690453, 424140541353, 1263030700894, 3609095743983, 9929303441355, 26377932553959, 67838309686132

OFFSET

1,1

COMMENTS

Column 2 of A278435.

FORMULA

Empirical polynomial of degree 31 (see link above)

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A278435.

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin, Nov 22 2016

STATUS

approved

editing

#2 by R. H. Hardin at Tue Nov 22 06:47:47 EST 2016
KEYWORD

allocating

allocated

#1 by R. H. Hardin at Tue Nov 22 06:47:47 EST 2016
NAME

allocated for R. H. Hardin

KEYWORD

allocating

STATUS

approved

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Last modified August 30 07:09 EDT 2024. Contains 375532 sequences. (Running on oeis4.)