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!)
A236943 Number of (n+1)X(2+1) 0..3 arrays with the maximum of every 2X2 subblock equal 1
2796, 112888, 4301002, 178006252, 7270497452, 302691231316, 12569519212796, 524245234532960, 21854738428787466, 911985738401725660, 38053568649173120756, 1588184219431937362884, 66282825930461723853260 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 2 of A236949
LINKS
FORMULA
Empirical: a(n) = 50*a(n-1) +99*a(n-2) -21884*a(n-3) +120364*a(n-4) +1009876*a(n-5) -7817815*a(n-6) +7902410*a(n-7) +19309801*a(n-8) -28628820*a(n-9) +8125920*a(n-10)
EXAMPLE
Some solutions for n=2
..0..2..3....0..2..1....1..3..1....1..1..2....2..0..0....1..3..3....1..0..3
..3..3..1....1..3..0....0..3..0....0..3..1....3..3..1....1..2..3....2..3..3
..2..1..2....0..1..0....0..3..2....3..2..1....0..0..2....2..3..0....3..0..0
CROSSREFS
Sequence in context: A340174 A252900 A236637 * A236777 A210104 A235276
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 01 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 April 14 23:31 EDT 2024. Contains 371667 sequences. (Running on oeis4.)