login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A180839 T(n,k) = number of n X k arrays containing k indistinguishable copies of 1..n with rows and columns in lexicographically strictly increasing order. 4
1, 1, 1, 1, 1, 1, 1, 1, 9, 1, 1, 1, 77, 72, 1, 1, 0, 472, 5385, 678, 1, 1, 0, 2164, 300888, 545426, 7719, 1, 1, 0, 7919, 13455048, 333191079, 79230924, 102963, 1, 1, 0, 23808, 506119693, 167550354642, 637698093267, 15755497776, 1573764, 1, 1, 0, 59823 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,9

COMMENTS

Table starts

.1.......1...........1............1............1..............1...........1.....1.1.1

.1.......1...........1............1............0..............0...........0.....0.0

.1.......9..........77..........472.........2164...........7919.......23808.59823

.1......72........5385.......300888.....13455048......506119693.16461677047

.1.....678......545426....333191079.167550354642.72310597296863

.1....7719....79230924.637698093267

.1..102963.15755497776

.1.1573764

.1

LINKS

R. H. Hardin, Table of n, a(n) for n=1..50

CROSSREFS

Sequence in context: A283989 A322029 A322107 * A272232 A239797 A010163

Adjacent sequences:  A180836 A180837 A180838 * A180840 A180841 A180842

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Sep 20 2010

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 4 20:08 EDT 2022. Contains 355086 sequences. (Running on oeis4.)