A209973 - OEIS

%I #15 Nov 29 2016 08:00:24

%S 0,0,12,20,36,52,76,100,132,156,204,244,276,324,396,428,492,556,628,

%T 700,764,812,932,1020,1084,1164,1308,1380,1476,1588,1684,1804,1932,

%U 2012,2204,2300,2396,2540,2756,2852,2980,3140,3284,3452,3612,3708

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

%C See A210000 for a guide to related sequences.

%H Chai Wah Wu, <a href="/A209973/b209973.txt">Table of n, a(n) for n = 0..10000</a>

%F a(n) = A197168(n) + 4*n + 2 for n >= 2. - _Chai Wah Wu_, Nov 28 2016

%t (See the Mathematica section at A210000.)

%Y Cf. A210000.

%K nonn

%O 0,3

%A _Clark Kimberling_, Mar 16 2012