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A038229 Triangle whose (i,j)-th entry is binomial(i,j)*3^(i-j)*11^j. 0
1, 3, 11, 9, 66, 121, 27, 297, 1089, 1331, 81, 1188, 6534, 15972, 14641, 243, 4455, 32670, 119790, 219615, 161051, 729, 16038, 147015, 718740, 1976535, 2898918, 1771561, 2187, 56133, 617463, 3773385, 13835745, 30438639, 37202781 (list; table; graph; refs; listen; history; text; internal format)
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: A070613 A316884 A084409 * A257538 A304052 A303122

Adjacent sequences:  A038226 A038227 A038228 * A038230 A038231 A038232

KEYWORD

nonn,tabl,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified September 20 19:48 EDT 2020. Contains 337265 sequences. (Running on oeis4.)