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Number of 2 X 2 matrices having all elements in {0,1,...,n} and determinant 5.
2

%I #10 Nov 22 2016 02:38:13

%S 0,0,0,3,9,45,53,77,93,117,153,193,209,257,281,353,385,449,473,545,

%T 617,665,705,793,825,985,1033,1105,1153,1265,1337,1457,1521,1601,1665,

%U 1881,1929,2073,2145,2241,2385,2545,2593,2761,2841,3057,3145

%N Number of 2 X 2 matrices having all elements in {0,1,...,n} and determinant 5.

%C See A210000 for a guide to related sequences.

%H Chai Wah Wu, <a href="/A209977/b209977.txt">Table of n, a(n) for n = 0..10000</a>

%t (See the Mathematica section at A210000.)

%Y Cf. A210000.

%K nonn

%O 0,4

%A _Clark Kimberling_, Mar 16 2012