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

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 60th year, we have over 367,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A181211 Number of nX7 binary matrices with no two 1's adjacent diagonally or antidiagonally 1
 128, 1156, 38936, 652864, 15786848, 315701824, 6985036032, 146719641600, 3168621039616, 67463750631424, 1447364588320768, 30930859081810944, 662387735874816000, 14169961476541661184, 303300655391773020160 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 7 of A181212 LINKS R. H. Hardin, Table of n, a(n) for n=1..100 FORMULA Empirical: a(n)=30*a(n-1)-5664*a(n-3)+28924*a(n-4)+269000*a(n-5)-2020704*a(n-6)-3766112*a(n-7)+50266144*a(n-8)-14668480*a(n-9)-554895616*a(n-10)+703166720*a(n-11)+2841716480*a(n-12)-5523241472*a(n-13)-6148366336*a(n-14)+18197354496*a(n-15)+2156556288*a(n-16)-26980270080*a(n-17)+8757542912*a(n-18)+17095786496*a(n-19)-9858056192*a(n-20)-3497000960*a(n-21)+3006267392*a(n-22)-260046848*a(n-24)+33554432*a(n-25) CROSSREFS Sequence in context: A134630 A133061 A188822 * A221071 A070055 A247930 Adjacent sequences: A181208 A181209 A181210 * A181212 A181213 A181214 KEYWORD nonn AUTHOR R. H. Hardin Oct 10 2010 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 December 2 20:53 EST 2023. Contains 367526 sequences. (Running on oeis4.)