login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Please make a donation to keep the OEIS running. In 2017 we replaced the server with a faster one, added 20000 new sequences, and reached 7000 citations (often saying "discovered thanks to the OEIS").
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A259295 Number of (n+1)X(6+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0001 0101 or 0111 1
1114, 13774, 148296, 1729342, 19528726, 224879224, 2569298018, 29500968894, 338055313800, 3878896990174, 44483223452862, 510316949991536, 5853542348939354, 67149326597585790, 770274713475362632 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A259297

LINKS

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

FORMULA

Empirical: a(n) = 17*a(n-1) +68*a(n-2) -2331*a(n-3) +2715*a(n-4) +127282*a(n-5) -407543*a(n-6) -3552923*a(n-7) +16967238*a(n-8) +53329851*a(n-9) -373159393*a(n-10) -374852552*a(n-11) +5020944360*a(n-12) -530953324*a(n-13) -44088857196*a(n-14) +35340877520*a(n-15) +260439199152*a(n-16) -343900816832*a(n-17) -1042238954144*a(n-18) +1873164312128*a(n-19) +2773317482368*a(n-20) -6583718366464*a(n-21) -4584267066368*a(n-22) +15516200251392*a(n-23) +3621536735232*a(n-24) -24598780526592*a(n-25) +1537459224576*a(n-26) +25766309396480*a(n-27) -6673413963776*a(n-28) -17180213116928*a(n-29) +6712291491840*a(n-30) +6848728006656*a(n-31) -3277395591168*a(n-32) -1448477720576*a(n-33) +776315338752*a(n-34) +120259084288*a(n-35) -68719476736*a(n-36)

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Cf. A259297

Sequence in context: A151951 A190017 A027622 * A260103 A258691 A221428

Adjacent sequences:  A259292 A259293 A259294 * A259296 A259297 A259298

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jun 23 2015

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 December 10 05:49 EST 2018. Contains 318044 sequences. (Running on oeis4.)