A038319 Triangle whose (i,j)-th entry is binomial(i,j)*11^(i-j)*5^j.

1, 11, 5, 121, 110, 25, 1331, 1815, 825, 125, 14641, 26620, 18150, 5500, 625, 161051, 366025, 332750, 151250, 34375, 3125, 1771561, 4831530, 5490375, 3327500, 1134375, 206250, 15625, 19487171, 62004635, 84551775, 64054375

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.

Crossrefs

Sequence in context: A363347 A229525 A174103 * A002547 A348063 A090840

Adjacent sequences: A038316 A038317 A038318 * A038320 A038321 A038322

Keyword

nonn,tabl,easy

Author

N. J. A. Sloane.

Status

approved