id:A080293 - OEIS Search Results

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A014486-encoding of the branch-reduced binomial-mod-2 binary trees.

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2, 50, 14642, 3969842, 267572689202, 69427226972978, 4581045692538239282, 301220569271221714981682, 1295918094920364850246919050705202, 332029112115571675270693117549056818 (list; graph; listen)

	OFFSET	`0,1`
	COMMENT	`These are obtained from the stunted binomial-mod-2 zigzag trees (A080263) either by extending each leaf to a branch of two leaves, or by branch-reducing every other such tree.`
	FORMULA	`a(n) = A080310(A080263(n)) = A014486(A080298(A080265(n))) = A014486(A080979(A080265(2*n)))`
	CROSSREFS	`a(n) = A014486(A080295(n)). Same sequence in binary: A080294. Breadth-first-wise encoding: A080318. "Moose-trees" obtained from these: A080973. Cf. A080292, A080297.` `Sequence in context: A080263 A088920 A079198 this_sequence A084107 A057943 A037419` `Adjacent sequences: A080290 A080291 A080292 this_sequence A080294 A080295 A080296`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen (my_firstname.my_surname(AT)iki.fi) Mar 02 2003`

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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