A038317 Triangle whose (i,j)-th entry is binomial(i,j)*11^(i-j)*3^j.

1, 11, 3, 121, 66, 9, 1331, 1089, 297, 27, 14641, 15972, 6534, 1188, 81, 161051, 219615, 119790, 32670, 4455, 243, 1771561, 2898918, 1976535, 718740, 147015, 16038, 729, 19487171, 37202781, 30438639, 13835745, 3773385, 617463, 56133

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: A260597 A147555 A157883 * A157781 A069869 A079841

Adjacent sequences: A038314 A038315 A038316 * A038318 A038319 A038320

Keyword

nonn,tabl,easy

Author

N. J. A. Sloane.

Status

approved