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A053174 Number of 3 X 3 integer matrices with elements in the range [ -n,n ] which represent a six-fold rotation. Also the sequence for the corresponding six-fold rotoinversions. 5
228, 1596, 9660, 20988, 43284, 77028, 163452, 230796, 343788, 455628 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..10.

FORMULA

A053170(n) = 2 * (1 + A053171(n) + A053172(n) + A053173(n) + a(n)).

CROSSREFS

Cf. A053170, A053171, A053172, A053173.

Sequence in context: A228963 A252220 A263301 * A335270 A103837 A302755

Adjacent sequences:  A053171 A053172 A053173 * A053175 A053176 A053177

KEYWORD

nonn,more

AUTHOR

Ralf W. Grosse-Kunstleve, Mar 26 2000

STATUS

approved

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Last modified June 21 00:57 EDT 2021. Contains 345329 sequences. (Running on oeis4.)