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!)
A206166 Number of (n+1)X6 0..3 arrays with every 2X2 subblock in a row having an equal number of equal diagonal or equal antidiagonal elements, adjacent rows differing in this number, and new values 0..3 introduced in row major order 1
44585, 2728486, 431954406, 26687737998, 4224315021758, 261163772277422, 41314757480152390, 2555772676080108894, 404068253225094442462, 25011015403359106400926, 3951885553297306130869094 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A206169

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..34

FORMULA

Empirical: a(n) = a(n-1) +9828*a(n-2) -9212*a(n-3) -491461*a(n-4) +246821*a(n-5) -124896442*a(n-6) +101165298*a(n-7) +1292222472*a(n-8) -569164536*a(n-9) -3891044736*a(n-10) +445357440*a(n-11) +3104538624*a(n-12) for n>13

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A258507 A254994 A295480 * A206380 A204786 A248066

Adjacent sequences:  A206163 A206164 A206165 * A206167 A206168 A206169

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 04 2012

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 August 1 17:38 EDT 2021. Contains 346402 sequences. (Running on oeis4.)