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A038311 Triangle whose (i,j)-th entry is binomial(i,j)*10^(i-j)*9^j. 0
1, 10, 9, 100, 180, 81, 1000, 2700, 2430, 729, 10000, 36000, 48600, 29160, 6561, 100000, 450000, 810000, 729000, 328050, 59049, 1000000, 5400000, 12150000, 14580000, 9841500, 3542940, 531441, 10000000, 63000000, 170100000, 255150000 (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..31.

CROSSREFS

Sequence in context: A052196 A243035 A070252 * A244960 A282560 A286775

Adjacent sequences:  A038308 A038309 A038310 * A038312 A038313 A038314

KEYWORD

nonn,tabl,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified October 19 22:55 EDT 2019. Contains 328244 sequences. (Running on oeis4.)