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A057123 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. 20

%I #10 Jul 02 2022 01:51:18

%S 0,2,12,16,91,99,124,140,165,868,881,944,970,1014,1213,1221,1364,1398,

%T 1442,1633,1649,1736,1887,9474,9493,9619,9657,9727,10317,10330,10606,

%U 10657,10727,11130,11156,11295,11550,13452,13465,13528,13554,13598

%N 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.

%H <a href="/index/Ro#rooted">Index entries for sequences related to rooted trees</a>

%e E.g., we have codes A014486(2) = 10, A014486(12) = 180, A014486(16) = 210, A014486(91) = 2920, for which the corresponding mountain ranges are:

%e ................................./\/\

%e ......../\/\...../\/\........./\/____\

%e /\/\./\/____\.../____\/\.../\/________\

%e and corresponding trees have degree 3 in all non-leaf, non-root vertices:

%e ...............................0.0

%e ........0.0......0.0..........0.1.

%e 0.0....0.1........1.0........0.1..

%e .1......1..........1..........1...

%p map(CatalanRankGlobal, A057122)

%K nonn

%O 0,2

%A _Antti Karttunen_, Aug 11 2000

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Last modified March 29 10:59 EDT 2024. Contains 371277 sequences. (Running on oeis4.)