A038325 Triangle read by rows whose (i,j)-th entry is binomial(i,j)*11^(i-j)*11^j.

1, 11, 11, 121, 242, 121, 1331, 3993, 3993, 1331, 14641, 58564, 87846, 58564, 14641, 161051, 805255, 1610510, 1610510, 805255, 161051, 1771561, 10629366, 26573415, 35431220, 26573415, 10629366, 1771561, 19487171, 136410197

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..29.

Crossrefs

Sequence in context: A279473 A110381 A165832 * A268922 A328918 A362396

Adjacent sequences: A038322 A038323 A038324 * A038326 A038327 A038328

Keyword

nonn,tabl,easy

Author

N. J. A. Sloane.

Status

approved