id:A079219 - OEIS Search Results

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Triangle T(n,d) (listed row-wise: T(1,1)=1, T(2,1)=1, T(2,2)=1, T(3,1)=2, T(3,2)=0, T(3,3)=1, ...) giving the number of n-edge general plane trees with root degree d that are fixed by the three-fold application of gatomorphisms A057511/A057512 (Deep rotation of general parenthesizations/plane trees).

+0
5

1, 1, 1, 2, 0, 1, 3, 1, 3, 1, 8, 0, 9, 0, 1, 18, 2, 22, 0, 0, 1, 43, 0, 60, 0, 0, 0, 1, 104, 5, 159, 1, 0, 3, 0, 1, 273, 0, 428, 0, 0, 0, 0, 0, 1, 702, 14, 1143, 0, 1, 9, 0, 0, 0, 1, 1870, 0, 3114, 0, 0, 0, 0, 0, 0, 0, 1, 4985, 38, 8505, 2, 0, 28, 0, 0, 3, 0, 0, 1, 13562, 0, 23475, 0, 0, 0, 0 (list; table; graph; listen)

	OFFSET	`0,4`
	COMMENT	`Note: the counts given here are inclusive, i.e. T(n,d) includes also the count A079217(n,d).`
	MAPLE	`[seq(A079219(n), n=0..119)]; A079219 := n -> PFixedByA057511(A003056(n)+1, 3, A002262(n)+1);`
	CROSSREFS	`The row sums equal to the left edge shifted left once = A079224 = third row of A079216 (the latter gives the Maple procedure PFixedByA057511). Cf. also A079217-A079222 and A003056 and A002262.` `Sequence in context: A044942 A114912 A029274 this_sequence A124377 A022827 A091889` `Adjacent sequences: A079216 A079217 A079218 this_sequence A079220 A079221 A079222`
	KEYWORD	`nonn,tabl`
	AUTHOR	`Antti Karttunen (my_firstname.my_surname(AT)iki.fi) Jan 03 2002`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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