A209986 Number of 2 X 2 matrices having all elements in {-n,...n} and determinant 3.

0, 0, 24, 176, 240, 368, 528, 720, 848, 1232, 1360, 1680, 2000, 2384, 2576, 3216, 3472, 3984, 4368, 4944, 5200, 6160, 6480, 7184, 7824, 8464, 8848, 10000, 10384, 11280, 11920, 12880, 13392, 14992, 15504, 16272, 17040, 18192, 18768, 20688

Offset

0,3

Comments

See A210000 for a guide to related sequences.

Links

Chai Wah Wu, Table of n, a(n) for n = 0..10000

Mathematica

(See the Mathematica section at A209981.)

Crossrefs

Cf. A210000.

Sequence in context: A209716 A209709 A375330 * A372521 A297522 A165187

Adjacent sequences: A209983 A209984 A209985 * A209987 A209988 A209989

Keyword

nonn

Author

Clark Kimberling, Mar 17 2012

Status

approved