A038295 Triangle whose (i,j)-th entry is binomial(i,j)*9^(i-j)*5^j.

1, 9, 5, 81, 90, 25, 729, 1215, 675, 125, 6561, 14580, 12150, 4500, 625, 59049, 164025, 182250, 101250, 28125, 3125, 531441, 1771470, 2460375, 1822500, 759375, 168750, 15625, 4782969, 18600435, 31000725, 28704375, 15946875

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..32.

Crossrefs

Sequence in context: A061041 A248308 A035417 * A206771 A317869 A103362

Adjacent sequences: A038292 A038293 A038294 * A038296 A038297 A038298

Keyword

nonn,tabl,easy

Author

N. J. A. Sloane.

Status

approved