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A057123
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Global ranks of terms of A057122: tells which terms of A014486 form rooted plane binary trees also when interpreted as codes for ordinary rooted planar trees.
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20
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0, 2, 12, 16, 91, 99, 124, 140, 165, 868, 881, 944, 970, 1014, 1213, 1221, 1364, 1398, 1442, 1633, 1649, 1736, 1887, 9474, 9493, 9619, 9657, 9727, 10317, 10330, 10606, 10657, 10727, 11130, 11156, 11295, 11550, 13452, 13465, 13528, 13554, 13598
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OFFSET
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0,2
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LINKS
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Table of n, a(n) for n=0..41.
Index entries for sequences related to rooted trees
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EXAMPLE
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E.g., we have codes A014486(2) = 10, A014486(12) = 180, A014486(16) = 210, A014486(91) = 2920, for which the corresponding mountain ranges are:
................................./\/\
......../\/\...../\/\........./\/____\
/\/\./\/____\.../____\/\.../\/________\
and corresponding trees have degree 3 in all non-leaf, non-root vertices:
...............................0.0
........0.0......0.0..........0.1.
0.0....0.1........1.0........0.1..
.1......1..........1..........1...
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MAPLE
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map(CatalanRankGlobal, A057122)
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CROSSREFS
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Sequence in context: A113802 A274890 A327570 * A358783 A134833 A057827
Adjacent sequences: A057120 A057121 A057122 * A057124 A057125 A057126
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KEYWORD
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nonn
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AUTHOR
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Antti Karttunen, Aug 11 2000
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STATUS
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approved
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