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!)
A237319 Number of (n+1)X(3+1) 0..2 arrays with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 1
1508, 12756, 107572, 949596, 8219232, 69761476, 591728030, 5221400304, 45243325970, 385224702840, 3278469369768, 28912413134488, 250838050990430, 2142369322671848, 18290968147649740, 161215992846170104 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A237324

LINKS

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

FORMULA

Empirical: a(n) = 11007*a(n-4) -30511165*a(n-8) +2416368893*a(n-12) -38181989668*a(n-16) +148755328110*a(n-20) +281773663032*a(n-24) +100862271352*a(n-28) +2907602208*a(n-32) for n>35

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A059464 A096021 A190032 * A281569 A252553 A237725

Adjacent sequences:  A237316 A237317 A237318 * A237320 A237321 A237322

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 06 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 October 25 13:59 EDT 2021. Contains 348253 sequences. (Running on oeis4.)