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 A153826 Index sequence to A089840: positions of bijections that preserve A127301 (the non-oriented form of general trees). 8
 0, 2, 22, 23, 24, 25, 26, 91, 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 291, 292, 293, 294, 295, 296, 297, 298, 395, 531, 634, 876, 1005, 1109, 1228, 1229, 1230, 1231, 1232, 1704, 3608, 3611, 3613, 3615, 3617, 4392 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS These terms form a subgroup in A089840 (A089839). Because A127301 can be computed as a fold and most of the recursive derivations of A089840 (i.e., tables A122201-A122204, A122283-A122290, A130400-A130403) are also folds, this sequence also gives the indices to those derived tables where bijections preserving A127301 occur. LINKS A. Karttunen, Table of n, a(n) for n = 0..2129 CROSSREFS Subset of A153827. Apart from 0, has no other terms in common with A153829. Cf. also A153828, A153830, A153831, A153832, A153833. Sequence in context: A079032 A325485 A284063 * A080283 A228112 A080433 Adjacent sequences:  A153823 A153824 A153825 * A153827 A153828 A153829 KEYWORD nonn AUTHOR Antti Karttunen, Jan 07 2009 STATUS approved

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Last modified August 17 12:30 EDT 2022. Contains 356189 sequences. (Running on oeis4.)