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A038217 Triangle whose (i,j)-th entry is binomial(i,j)*2^(i-j)*11^j. +0
1
1, 2, 11, 4, 44, 121, 8, 132, 726, 1331, 16, 352, 2904, 10648, 14641, 32, 880, 9680, 53240, 146410, 161051, 64, 2112, 29040, 212960, 878460, 1932612, 1771561, 128, 4928, 81312, 745360, 4099480, 13528284, 24801854, 19487171, 256, 11264 (list; table; graph; listen)
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

Row sums: A001022.

Sequence in context: A070840 A082264 A070532 this_sequence A152985 A077272 A009301

Adjacent sequences: A038214 A038215 A038216 this_sequence A038218 A038219 A038220

KEYWORD

nonn,tabl,easy

AUTHOR

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

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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