|
|
A038302
|
|
Triangle whose (i,j)-th entry is binomial(i,j)*9^(i-j)*12^j.
|
|
0
|
|
|
1, 9, 12, 81, 216, 144, 729, 2916, 3888, 1728, 6561, 34992, 69984, 62208, 20736, 59049, 393660, 1049760, 1399680, 933120, 248832, 531441, 4251528, 14171760, 25194240, 25194240, 13436928, 2985984, 4782969, 44641044, 178564176
(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
|
|
|
MATHEMATICA
|
Table[Binomial[i, j]9^(i-j) 12^j, {i, 0, 10}, {j, 0, i}]//Flatten (* Harvey P. Dale, Jan 19 2024 *)
|
|
CROSSREFS
|
|
|
KEYWORD
|
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|