A038329 Triangle whose (i,j)-th entry is binomial(i,j)*12^(i-j)*3^j.

1, 12, 3, 144, 72, 9, 1728, 1296, 324, 27, 20736, 20736, 7776, 1296, 81, 248832, 311040, 155520, 38880, 4860, 243, 2985984, 4478976, 2799360, 933120, 174960, 17496, 729, 35831808, 62705664, 47029248, 19595520, 4898880, 734832, 61236

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..34.

Crossrefs

Sequence in context: A258227 A130895 A367431 * A098909 A261403 A010202

Adjacent sequences: A038326 A038327 A038328 * A038330 A038331 A038332

Keyword

nonn,tabl,easy

Author

N. J. A. Sloane.

Status

approved