A038301 Triangle whose (i,j)-th entry is binomial(i,j)*9^(i-j)*11^j.

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

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

Harvey P. Dale, Table of n, a(n) for n = 0..1000

Mathematica

Table[Binomial[i, j]9^(i-j) 11^j, {i, 0, 10}, {j, 0, i}]//Flatten (* Harvey P. Dale, May 08 2020 *)

Crossrefs

Sequence in context: A195941 A195992 A108687 * A359925 A277998 A289288

Adjacent sequences: A038298 A038299 A038300 * A038302 A038303 A038304

Keyword

nonn,tabl,easy

Author

N. J. A. Sloane.

Status

approved