A302474 - OEIS

%I #4 Apr 08 2018 10:18:13

%S 0,34,250,1401,10264,78679,584333,4330427,32116855,238854305,

%T 1774890111,13186901755,97987405188,728115173717,5410378555145,

%U 40202636764567,298731900955463,2219776401635593,16494405056538952,122564331015474402

%N Number of 4Xn 0..1 arrays with every element equal to 1, 2, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Row 4 of A302472.

%H R. H. Hardin, <a href="/A302474/b302474.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A302474/a302474.txt">Empirical recurrence of order 63</a>

%F Empirical recurrence of order 63 (see link above)

%e Some solutions for n=5

%e ..0..0..1..1..0. .0..1..0..0..1. .0..0..0..1..1. .0..0..1..1..0

%e ..1..1..1..0..1. .1..0..1..1..0. .1..1..0..0..1. .1..1..1..0..0

%e ..0..1..0..0..0. .0..0..1..1..0. .0..1..1..0..1. .1..0..1..0..1

%e ..0..0..1..1..0. .0..1..1..0..0. .0..0..0..1..1. .0..0..0..1..0

%Y Cf. A302472.

%K nonn

%O 1,2

%A _R. H. Hardin_, Apr 08 2018