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A007560
Number of planted identity trees where non-root, non-leaf nodes an even distance from root are of degree 2.
(Formerly M0325)
+0
1
1, 1, 1, 1, 2, 2, 4, 6, 10, 17, 29, 51, 89, 159, 284, 512, 930, 1692, 3101, 5698, 10515, 19464, 36143, 67296, 125622, 235050, 440756, 828142, 1558955, 2939761, 5552744, 10504222, 19899760, 37750091, 71704061
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 4 23:11 EST 2009. Contains 170347 sequences.
AT&T Labs Research
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