A038332 Triangle whose (i,j)-th entry is binomial(i,j)*12^(i-j)*6^j.

1, 12, 6, 144, 144, 36, 1728, 2592, 1296, 216, 20736, 41472, 31104, 10368, 1296, 248832, 622080, 622080, 311040, 77760, 7776, 2985984, 8957952, 11197440, 7464960, 2799360, 559872, 46656, 35831808, 125411328, 188116992, 156764160

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..31.

Mathematica

Flatten[Table[Binomial[i, j]12^(i-j) 6^j, {i, 0, 10}, {j, 0, i}]] (* Harvey P. Dale, Apr 01 2013 *)

Crossrefs

Sequence in context: A119870 A234516 A177690 * A093763 A002548 A363151

Adjacent sequences: A038329 A038330 A038331 * A038333 A038334 A038335

Keyword

nonn,tabl,easy

Author

N. J. A. Sloane.

Status

approved