id:A089430 - OEIS Search Results

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Number of fixed points in range [A014137(n-1)..A014138(n-1)] of permutation A082339/A082340.

+0
1

1, 1, 2, 3, 6, 12, 30, 79, 232, 716, 2318, 7714, 26270, 90944, 319146, 1132185, 4053618, 14626828, 53136324, 194174324, 713267792 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`The number of n-node binary trees fixed by the corresponding automorphism(s).`
	LINKS	`A. Karttunen, C-program for computing the initial terms of this sequence`
	CROSSREFS	`Adjacent sequences: A089427 A089428 A089429 this_sequence A089431 A089432 A089433` `Sequence in context: A003317 A014278 A060777 this_sequence A096746 A096203 A102970`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen (His_Firstname.His_Surname(AT)iki.fi), Nov 29 2003`

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Last modified October 13 20:18 EDT 2008. Contains 145016 sequences.

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