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A036420
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Number of ternary rooted trees with n nodes and height exactly 5.
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0
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0, 0, 0, 0, 0, 1, 4, 13, 32, 74, 155, 316, 612, 1160, 2126, 3829, 6737, 11672, 19856, 33332, 55112, 90014, 145105, 231200, 363985, 566692, 872274, 1328167, 2000224, 2980316, 4393106, 6407555, 9246741, 13204470, 18657868, 26088224, 36095090
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,7
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REFERENCES
| A. T. Balaban, J. W. Kennedy and L. V. Quintas, The number of alkanes having n carbons and a longest chain of length d, J. Chem. Education, 65 (No. 4, 1988), 304-313.
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LINKS
| Index entries for sequences related to rooted trees
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CROSSREFS
| Cf. A036370, A036437.
Sequence in context: A051912 A060099 A173277 * A054039 A124669 A036894
Adjacent sequences: A036417 A036418 A036419 * A036421 A036422 A036423
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KEYWORD
| nonn,fini
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Eric Rains (rains(AT)caltech.edu)
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