A038323 Triangle whose (i,j)-th entry is binomial(i,j)*11^(i-j)*9^j.

1, 11, 9, 121, 198, 81, 1331, 3267, 2673, 729, 14641, 47916, 58806, 32076, 6561, 161051, 658845, 1078110, 882090, 360855, 59049, 1771561, 8696754, 17788815, 19405980, 11908215, 3897234, 531441, 19487171, 111608343, 273947751

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

Table of n, a(n) for n=0..30.

Crossrefs

Sequence in context: A219746 A335854 A220664 * A121154 A326587 A256078

Adjacent sequences: A038320 A038321 A038322 * A038324 A038325 A038326

Keyword

nonn,tabl,easy

Author

N. J. A. Sloane.

Status

approved