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A038266 Triangle whose (i,j)-th entry is binomial(i,j)*6^(i-j)*12^j. 0
1, 6, 12, 36, 144, 144, 216, 1296, 2592, 1728, 1296, 10368, 31104, 41472, 20736, 7776, 77760, 311040, 622080, 622080, 248832, 46656, 559872, 2799360, 7464960, 11197440, 8957952, 2985984, 279936, 3919104, 23514624, 78382080, 156764160 (list; table; graph; refs; listen; history; 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.

CROSSREFS

Sequence in context: A096932 A176681 A064476 * A117596 A096377 A026083

Adjacent sequences:  A038263 A038264 A038265 * A038267 A038268 A038269

KEYWORD

nonn,tabl,easy

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.