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

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A240048 Number of 3Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4 1
4, 10, 26, 72, 174, 597, 1187, 3115, 7269, 16520, 39181, 89951, 210684, 483773, 1131924, 2616441, 6047969, 14112456, 32543109, 75591535, 175328537, 405822918, 941534652, 2181820138, 5057085795, 11720944941, 27171466826, 62973901722 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 3 of A240046

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

R. H. Hardin, Empirical recurrence of order 76

FORMULA

Empirical recurrence of order 76 (see link above)

EXAMPLE

Some solutions for n=3

..2..3..2....2..3..3....3..2..2....3..2..2....3..2..2....2..3..2....2..3..3

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

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

CROSSREFS

Sequence in context: A099234 A087222 A130583 * A105999 A192210 A121494

Adjacent sequences:  A240045 A240046 A240047 * A240049 A240050 A240051

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 31 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 December 1 14:10 EST 2021. Contains 349430 sequences. (Running on oeis4.)