login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A278553 T(n,k)=Number of nXk 0..3 arrays with rows and columns in lexicographic nondecreasing order but with exactly two mistakes. 7
0, 0, 0, 4, 70, 4, 65, 1531, 1531, 65, 456, 25402, 124564, 25402, 456, 2128, 385040, 6207774, 6207774, 385040, 2128, 7728, 4880813, 256173362, 1116456061, 256173362, 4880813, 7728, 23607, 50476458, 9647190761, 157222953688, 157222953688 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Table starts

.....0.........0.............4.................65....................456

.....0........70..........1531..............25402.................385040

.....4......1531........124564............6207774..............256173362

....65.....25402.......6207774.........1116456061...........157222953688

...456....385040.....256173362.......157222953688.........81144920762300

..2128...4880813....9647190761.....19154084929099......35461508433808988

..7728..50476458..327443433750...2139517647414832...13763018389926177995

.23607.435272199.9777854836324.221564412439675221.4934142560387144138930

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..97

FORMULA

Empirical for column k:

k=1: [polynomial of degree 11]

k=2: [polynomial of degree 47]

k=3: [polynomial of degree 191]

EXAMPLE

Some solutions for n=3 k=4

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

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

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

CROSSREFS

Sequence in context: A093852 A065573 A308294 * A101841 A274873 A281654

Adjacent sequences:  A278550 A278551 A278552 * A278554 A278555 A278556

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Nov 23 2016

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 17 07:39 EDT 2021. Contains 348048 sequences. (Running on oeis4.)