A372682 - OEIS

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A372682

Number of distinct circles that can be constructed from the 3 vertices and the equally spaced 3*n points placed on the sides of an equilateral triangle, using only a compass.

6

3, 15, 36, 69, 123, 180, 264, 339, 453, 549, 702, 807, 999, 1128, 1329, 1494, 1749, 1935, 2214, 2373, 2682, 2940, 3288, 3483

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

OFFSET

0,1

COMMENTS

See A372614 for images of the circles.

LINKS

Table of n, a(n) for n=0..23.

CROSSREFS

Cf. A372614, A372615, A359931, A360350, A361622, A365669.

Sequence in context: A161738 A062741 A185541 * A176661 A117561 A353679

Adjacent sequences: A372679 A372680 A372681 * A372683 A372684 A372685

KEYWORD

nonn,more

AUTHOR

Scott R. Shannon, May 10 2024

STATUS

approved