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!)
A202417 Number of (n+2)X6 binary arrays with no more than one of any consecutive three bits set in any row or column 1
739, 5167, 37029, 259651, 1823347, 12853815, 90488829, 636713695, 4482191171, 31552566393, 222091707777, 1563301187969, 11004262988247, 77459398723649, 545238701722185, 3837961695887271, 27015585227632543, 190163795686945801 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A202421

LINKS

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

FORMULA

Empirical: a(n) = a(n-1) +15*a(n-2) +163*a(n-3) +435*a(n-4) -312*a(n-5) -6058*a(n-6) -20551*a(n-7) -10846*a(n-8) +129529*a(n-9) +382414*a(n-10) +214587*a(n-11) -1252567*a(n-12) -3718269*a(n-13) -2774661*a(n-14) +7541788*a(n-15) +20442871*a(n-16) +15190133*a(n-17) -16329959*a(n-18) -59139819*a(n-19) -73602496*a(n-20) -10192761*a(n-21) +98952469*a(n-22) +167803153*a(n-23) +149515753*a(n-24) -7453678*a(n-25) -215498436*a(n-26) -282603533*a(n-27) -222705450*a(n-28) -24104176*a(n-29) +248207971*a(n-30) +302814223*a(n-31) +242555242*a(n-32) +89632215*a(n-33) -138303598*a(n-34) -194727635*a(n-35) -160749598*a(n-36) -108454542*a(n-37) +27857814*a(n-38) +55543779*a(n-39) +55776272*a(n-40) +56989956*a(n-41) -63166*a(n-42) +4750982*a(n-43) -12142956*a(n-44) -8474055*a(n-45) -1877613*a(n-46) -2528704*a(n-47) +1168456*a(n-48) +249876*a(n-49) +279332*a(n-50) +195827*a(n-51) -50365*a(n-52) +16393*a(n-53) -15338*a(n-54) -3822*a(n-55) +812*a(n-56) -678*a(n-57) +307*a(n-58) +2*a(n-59) -2*a(n-60) +4*a(n-61) -a(n-62)

EXAMPLE

Some solutions for n=3

..0..0..0..0..0..1....0..0..0..0..0..0....0..0..1..0..0..0....0..0..1..0..0..0

..0..0..0..1..0..0....1..0..0..0..0..1....1..0..0..0..0..1....1..0..0..0..0..0

..0..0..0..0..0..0....0..0..0..0..1..0....0..1..0..0..0..0....0..0..0..1..0..0

..0..1..0..0..0..0....0..1..0..0..0..0....0..0..0..0..1..0....0..1..0..0..0..1

..1..0..0..0..0..1....0..0..1..0..0..0....0..0..1..0..0..1....0..0..0..0..1..0

CROSSREFS

Sequence in context: A224564 A077723 A235466 * A078906 A066404 A066402

Adjacent sequences:  A202414 A202415 A202416 * A202418 A202419 A202420

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 19 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 April 8 00:29 EDT 2020. Contains 333311 sequences. (Running on oeis4.)