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A038298
Triangle whose (i,j)-th entry is binomial(i,j)*9^(i-j)*8^j.
0
1, 9, 8, 81, 144, 64, 729, 1944, 1728, 512, 6561, 23328, 31104, 18432, 4096, 59049, 262440, 466560, 414720, 184320, 32768, 531441, 2834352, 6298560, 7464960, 4976640, 1769472, 262144, 4782969, 29760696, 79361856, 117573120
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
Flatten[Table[Binomial[i, j]9^(i-j) 8^j, {i, 0, 10}, {j, 0, i}]] (* Harvey P. Dale, Dec 11 2011 *)
CROSSREFS
Sequence in context: A030027 A082201 A357880 * A370935 A013439 A180680
KEYWORD
nonn,tabl,easy
AUTHOR
STATUS
approved