login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A036420 Number of ternary rooted trees with n nodes and height exactly 5. 0
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; text; internal format)
OFFSET

0,7

LINKS

Table of n, a(n) for n=0..36.

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 (4 (1988), 304-313.

Index entries for sequences related to rooted trees

CROSSREFS

Cf. A036370, A036437.

Sequence in context: A060099 A208638 A173277 * A266094 A054039 A302082

Adjacent sequences:  A036417 A036418 A036419 * A036421 A036422 A036423

KEYWORD

nonn,fini

AUTHOR

N. J. A. Sloane, Eric Rains (rains(AT)caltech.edu)

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 18 00:19 EST 2019. Contains 320237 sequences. (Running on oeis4.)