The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A259510 Number of (n+1)X(3+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0000 0001 0101 0111 1
 87, 533, 3270, 20293, 126045, 784130, 4879059, 30366347, 189000090, 1176388523, 7322185101, 45575811794, 283679519673, 1765722127481, 10990478900276, 68408656100315, 425799800891931, 2650329642920874, 16496595246904901 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 3 of A259515 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 5*a(n-1) +20*a(n-2) -68*a(n-3) -97*a(n-4) +234*a(n-5) +159*a(n-6) -238*a(n-7) -94*a(n-8) +56*a(n-9) +8*a(n-10) EXAMPLE Some solutions for n=4 ..1..0..0..0....0..0..1..0....0..0..0..0....0..0..0..1....0..1..0..0 ..0..0..0..0....0..1..0..0....0..1..0..0....1..0..1..1....1..0..0..1 ..0..0..0..0....0..0..0..1....1..1..1..0....0..1..1..0....0..1..0..0 ..0..0..0..1....0..0..0..0....1..0..1..1....1..0..1..1....0..0..0..1 ..0..0..1..1....0..0..0..1....1..1..0..1....0..0..0..1....0..0..1..0 CROSSREFS Cf. A259515 Sequence in context: A098139 A359341 A297509 * A109601 A297723 A061625 Adjacent sequences: A259507 A259508 A259509 * A259511 A259512 A259513 KEYWORD nonn AUTHOR R. H. Hardin, Jun 29 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified March 31 19:11 EDT 2023. Contains 361672 sequences. (Running on oeis4.)