A358716 - OEIS

A358716

a(n) is the number of inequivalent ways to cut an equilateral triangle with edges of size n into equilateral triangles with integer sides.

1, 2, 3, 12, 50, 711, 18031, 952013, 92323440 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	COMMENTS	`Similar to A358715, but now we do not regard dissections which differ by a rotation and/or reflection as distinct.`
	LINKS	`Table of n, a(n) for n=1..9.`
	EXAMPLE	`a(3)=3 because of:` `/\ /\ /\` `/ \ /\/\ /\/\` `/ \ / \/\ /\/\/\`
	CROSSREFS	`Cf. A224239, A358715.` `Cf. A299705.` `Sequence in context: A232864 A307957 A307956 * A002638 A027072 A083746` `Adjacent sequences: A358713 A358714 A358715 * A358717 A358718 A358719`
	KEYWORD	`nonn,more`
	AUTHOR	`Craig Knecht and John Mason, Nov 28 2022`
	STATUS	`approved`

Last modified March 20 21:07 EDT 2023. Contains 361391 sequences. (Running on oeis4.)