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A038337
Triangle whose (i,j)-th entry is binomial(i,j)*12^(i-j)*11^j.
0
1, 12, 11, 144, 264, 121, 1728, 4752, 4356, 1331, 20736, 76032, 104544, 63888, 14641, 248832, 1140480, 2090880, 1916640, 878460, 161051, 2985984, 16422912, 37635840, 45999360, 31624560, 11595672, 1771561, 35831808, 229920768
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.
MATHEMATICA
Table[Binomial[n, k]12^(n-k) 11^k, {n, 0, 10}, {k, 0, n}]//Flatten (* Harvey P. Dale, Aug 24 2019 *)
CROSSREFS
Sequence in context: A171986 A254717 A195748 * A155825 A125509 A281251
KEYWORD
nonn,tabl,easy
AUTHOR
STATUS
approved