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!)
A251918 Number of (n+2)X(3+2) 0..3 arrays with every 3X3 subblock row and column sum 2 4 5 or 7 and every diagonal and antidiagonal sum not 2 4 5 or 7 1
2524, 4624, 6086, 10820, 27366, 59760, 153792, 424648, 1188644, 3247774, 9831616, 27631982, 83818706, 238563390, 729213256, 2076327410, 6367943136, 18160895004, 55719714944, 159044646208, 488184738886, 1393489632448, 4278578773162 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A251923

LINKS

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

R. H. Hardin, Empirical recurrence of order 73

FORMULA

Empirical recurrence of order 73 (see link above)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

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

CROSSREFS

Sequence in context: A308736 A031984 A045213 * A111729 A252288 A268332

Adjacent sequences:  A251915 A251916 A251917 * A251919 A251920 A251921

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 11 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 12 13:59 EDT 2022. Contains 356077 sequences. (Running on oeis4.)