A235651 - OEIS

%I #6 Jun 26 2022 03:25:37

%S 20164,2723053,444495768,43576923092,4228043972530,294719604196153,

%T 20402007541421466,1111136113863736174,60260903730760132349,

%U 2706696881330482536901,121212900258048259395753

%N Number of (n+1) X (3+1) 0..3 arrays with 2 X 2 subblock sum of squares lexicographically nondecreasing rowwise and columnwise.

%C Column 3 of A235652.

%H R. H. Hardin, <a href="/A235651/b235651.txt">Table of n, a(n) for n = 1..24</a>

%e Some solutions for n=1

%e ..2..0..3..1....3..1..3..3....1..0..1..3....3..0..3..0....3..2..3..1

%e ..3..2..2..2....3..0..3..0....0..1..2..2....2..0..3..2....1..2..3..3

%Y Cf. A235652.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 13 2014