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!)
A240762 Number of 3Xn 0..3 arrays with no element equal to one 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 zero plus the sum of the elements antidiagonally to its northeast, modulo 4 1
4, 12, 19, 142, 553, 4112, 18373, 131958, 625820, 4472258, 21760942, 154039075, 763999159, 5342021291, 26913960199, 185826785482, 949177894331, 6473768540990, 33478372193270, 225722723781992, 1180496482754391 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 3 of A240760

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..70

EXAMPLE

Some solutions for n=4

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

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

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

CROSSREFS

Sequence in context: A239727 A341888 A009557 * A319259 A050021 A239662

Adjacent sequences:  A240759 A240760 A240761 * A240763 A240764 A240765

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 12 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 2 15:41 EST 2021. Contains 349445 sequences. (Running on oeis4.)