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 A079225 Number of Catalan objects fixed by four-fold application of the Catalan bijections A057511/A057512 (Deep rotation of general parenthesizations/plane trees). 4
 1, 1, 2, 5, 11, 30, 82, 233, 680, 2033, 6164, 18923, 58768, 184045, 581105, 1846906, 5905364, 18980465, 61292929, 198758704, 646974285, 2113163707, 6923642271, 22749608810, 74946337830, 247499313730, 819154110660, 2716779932308 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS FORMULA a(n) = A079216(n, 4) MAPLE A079225 := n -> A079216bi(n, 4); CROSSREFS The fourth row of A079216. The leftmost edge of the triangle A079220 and also its row sums shifted by one. Occurs in A073202 as row 2290625151. Cf. A057546, A079223-A079227. Sequence in context: A121134 A144959 A131347 * A139466 A139467 A124481 Adjacent sequences:  A079222 A079223 A079224 * A079226 A079227 A079228 KEYWORD nonn AUTHOR Antti Karttunen Jan 03 2002 STATUS approved

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