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A038311 Triangle whose (i,j)-th entry is binomial(i,j)*10^(i-j)*9^j. 0

%I

%S 1,10,9,100,180,81,1000,2700,2430,729,10000,36000,48600,29160,6561,

%T 100000,450000,810000,729000,328050,59049,1000000,5400000,12150000,

%U 14580000,9841500,3542940,531441,10000000,63000000,170100000,255150000

%N Triangle whose (i,j)-th entry is binomial(i,j)*10^(i-j)*9^j.

%D B. N. Cyvin et al., Isomer enumeration of unbranched catacondensed polygonal systems with pentagons and heptagons, Match, No. 34 (Oct 1996), pp. 109-121.

%K nonn,tabl,easy

%O 0,2

%A _N. J. A. Sloane_.

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Last modified February 7 17:57 EST 2023. Contains 360128 sequences. (Running on oeis4.)