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!)
A251398 Number of (n+1)X(4+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements less than the absolute difference of its antidiagonal elements 1
647154, 442476530, 301644677965, 205729518595782, 140311657486510902, 95695193651485137766, 65265944559607354012467, 44512625089074325076093620, 30358463245869796237858714204, 20705053555910102684134541106487 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A251402

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A253405 A034628 A014496 * A057847 A058327 A234160

Adjacent sequences:  A251395 A251396 A251397 * A251399 A251400 A251401

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 02 2014

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 March 30 10:09 EDT 2020. Contains 333125 sequences. (Running on oeis4.)