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A209990 Number of 2 X 2 matrices having all elements in {-n,...n} and determinant 5. 4
0, 0, 8, 64, 128, 408, 472, 664, 792, 984, 1272, 1592, 1720, 2104, 2296, 2872, 3128, 3640, 3832, 4408, 4984, 5368, 5688, 6392, 6648, 7928, 8312, 8888, 9272, 10168, 10744, 11704, 12216, 12856, 13368, 15096, 15480, 16632, 17208, 17976 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
COMMENTS
See A210000 for a guide to related sequences.
LINKS
MATHEMATICA
(See the Mathematica section at A209981.)
CROSSREFS
Cf. A210000.
Sequence in context: A134739 A116978 A125110 * A235425 A255932 A043152
KEYWORD
nonn
AUTHOR
Clark Kimberling, Mar 17 2012
STATUS
approved

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)