A038316 Triangle whose (i,j)-th entry is binomial(i,j)*11^(i-j)*2^j.

1, 11, 2, 121, 44, 4, 1331, 726, 132, 8, 14641, 10648, 2904, 352, 16, 161051, 146410, 53240, 9680, 880, 32, 1771561, 1932612, 878460, 212960, 29040, 2112, 64, 19487171, 24801854, 13528284, 4099480, 745360, 81312, 4928, 128, 214358881

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..36.

Crossrefs

Sequence in context: A130217 A096044 A160464 * A139311 A355369 A140749

Adjacent sequences: A038313 A038314 A038315 * A038317 A038318 A038319

Keyword

nonn,tabl,easy

Author

N. J. A. Sloane.

Status

approved