The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A304672 Number of nX4 0..1 arrays with every element unequal to 0, 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero. 1
 1, 13, 23, 56, 199, 598, 1950, 6588, 21871, 72947, 246313, 831539, 2800595, 9456853, 31947922, 107896991, 364471611, 1231447079, 4160781508, 14058449969, 47502997786, 160513512708, 542381014412, 1832740869231, 6192990940151 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Column 4 of A304676. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 R. H. Hardin, Empirical recurrence of order 70 FORMULA Empirical recurrence of order 70 (see link above) EXAMPLE Some solutions for n=5 ..0..1..1..0. .0..1..0..1. .0..0..1..0. .0..1..1..0. .0..0..0..1 ..0..1..0..1. .1..0..1..0. .1..1..0..1. .0..1..0..1. .1..1..0..0 ..0..1..0..1. .1..1..0..0. .1..1..1..0. .0..0..1..1. .0..1..1..1 ..0..0..1..0. .1..0..1..0. .1..1..0..1. .0..1..0..1. .1..1..0..1 ..1..0..0..1. .0..1..0..1. .0..0..1..0. .1..0..0..1. .0..0..0..1 CROSSREFS Cf. A304676. Sequence in context: A154863 A194156 A139863 * A316119 A046862 A155093 Adjacent sequences: A304669 A304670 A304671 * A304673 A304674 A304675 KEYWORD nonn AUTHOR R. H. Hardin, May 16 2018 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 June 18 23:32 EDT 2024. Contains 373488 sequences. (Running on oeis4.)