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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A038301 Triangle whose (i,j)-th entry is binomial(i,j)*9^(i-j)*11^j. 0
1, 9, 11, 81, 198, 121, 729, 2673, 3267, 1331, 6561, 32076, 58806, 47916, 14641, 59049, 360855, 882090, 1078110, 658845, 161051, 531441, 3897234, 11908215, 19405980, 17788815, 8696754, 1771561, 4782969, 40920957, 150043509, 305644185 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

B. N. Cyvin et al., Isomer enumeration of unbranched catacondensed polygonal systems with pentagons and heptagons, Match, No. 34 (Oct 1996), pp. 109-121.

LINKS

Table of n, a(n) for n=0..31.

CROSSREFS

Sequence in context: A195941 A195992 A108687 * A277998 A289288 A137016

Adjacent sequences:  A038298 A038299 A038300 * A038302 A038303 A038304

KEYWORD

nonn,tabl,easy

AUTHOR

N. J. A. Sloane.

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 June 20 16:26 EDT 2019. Contains 324234 sequences. (Running on oeis4.)