A209976 - OEIS

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A209976

Number of 2 X 2 matrices having all elements in {0,1,...,n} and determinant 4.

2

0, 0, 5, 11, 43, 59, 83, 107, 155, 179, 227, 267, 331, 379, 451, 483, 579, 643, 715, 787, 915, 963, 1083, 1171, 1267, 1347, 1491, 1563, 1755, 1867, 1963, 2083, 2275, 2355, 2547, 2643, 2835, 2979, 3195, 3291, 3483, 3643, 3787, 3955, 4275, 4371

(list; graph; refs; listen; history; text; internal format)

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 A210000.)

CROSSREFS

Sequence in context: A055113 A260268 A129015 * A141355 A262020 A222368

Adjacent sequences: A209973 A209974 A209975 * A209977 A209978 A209979

KEYWORD

nonn

AUTHOR

Clark Kimberling, Mar 16 2012

STATUS

approved