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A038292

Triangle whose (i,j)-th entry is binomial(i,j)*9^(i-j)*2^j.

1, 9, 2, 81, 36, 4, 729, 486, 108, 8, 6561, 5832, 1944, 288, 16, 59049, 65610, 29160, 6480, 720, 32, 531441, 708588, 393660, 116640, 19440, 1728, 64, 4782969, 7440174, 4960116, 1837080, 408240, 54432, 4032, 128, 43046721, 76527504

(list; table; graph; refs; listen; history; text; internal format)

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..37.

CROSSREFS

Sequence in context: A248314 A174837 A096042 * A294685 A200238 A368982

Adjacent sequences: A038289 A038290 A038291 * A038293 A038294 A038295

KEYWORD

nonn,tabl,easy

AUTHOR

N. J. A. Sloane

STATUS

approved

URL: https://oeis.org/A038292

⇱ A038292 - OEIS