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!)
A184024 1/8 the number of (n+1)X5 0..3 arrays with all 2X2 subblock sums the same 1
748, 1347, 2597, 5802, 13603, 35256, 94469, 271176, 798403, 2473212, 7822157, 25745712, 86242603, 298311996, 1046975909, 3769450656, 13725480883, 50967923052, 190813253117, 724853725872, 2768753841403, 10688113731036 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A184029

LINKS

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

FORMULA

Empirical: a(n)=8*a(n-1)+16*a(n-2)-268*a(n-3)+189*a(n-4)+3388*a(n-5)-5824*a(n-6)-20048*a(n-7)+49756*a(n-8)+52752*a(n-9)-196896*a(n-10)-24192*a(n-11)+369216*a(n-12)-131328*a(n-13)-262656*a(n-14)+165888*a(n-15)

EXAMPLE

Some solutions for 4X5

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

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

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

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

CROSSREFS

Sequence in context: A252453 A252946 A242150 * A263381 A071924 A078549

Adjacent sequences:  A184021 A184022 A184023 * A184025 A184026 A184027

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 08 2011

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 27 05:20 EDT 2021. Contains 348271 sequences. (Running on oeis4.)