|
|
A038270
|
|
Triangle whose (i,j)-th entry is binomial(i,j)*7^(i-j)*4^j.
|
|
0
|
|
|
1, 7, 4, 49, 56, 16, 343, 588, 336, 64, 2401, 5488, 4704, 1792, 256, 16807, 48020, 54880, 31360, 8960, 1024, 117649, 403368, 576240, 439040, 188160, 43008, 4096, 823543, 3294172, 5647152, 5378240, 3073280, 1053696, 200704, 16384
(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[n, k]7^(n-k) 4^k, {n, 0, 10}, {k, 0, n}]//Flatten (* Harvey P. Dale, May 26 2020 *)
|
|
CROSSREFS
|
|
|
KEYWORD
|
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|