A234180 - OEIS

A234180

Number of (n+1)X(4+1) 0..5 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1.

%I #7 Jun 02 2025 09:14:48

%S 10120,392664,15322566,604124712,23888919458,946183426722,

%T 37514052801518,1488477618052368,59095926803262212,

%U 2347453327563031374,93288365373668423336,3708702306984452959906,147488317372296445028922

%N Number of (n+1)X(4+1) 0..5 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1.

%C Column 4 of A234184

%H R. H. Hardin, <a href="/A234180/b234180.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A234180/a234180.txt">Empirical recurrence of order 60</a>

%F Empirical recurrence of order 60 (see link above)

%e Some solutions for n=1

%e ..4..4..4..3..2....4..3..4..3..3....4..4..4..4..5....2..1..2..2..3

%e ..4..3..4..3..3....3..3..3..3..2....4..3..4..4..5....1..2..1..2..2

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 20 2013