A038305 Triangle whose (i,j)-th entry is binomial(i,j)*10^(i-j)*3^j.

1, 10, 3, 100, 60, 9, 1000, 900, 270, 27, 10000, 12000, 5400, 1080, 81, 100000, 150000, 90000, 27000, 4050, 243, 1000000, 1800000, 1350000, 540000, 121500, 14580, 729, 10000000, 21000000, 18900000, 9450000, 2835000, 510300, 51030

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

Harvey P. Dale, Table of n, a(n) for n = 0..1000

Mathematica

Table[Binomial[i, j]10^(i-j) 3^j, {i, 0, 10}, {j, 0, i}]//Flatten (* Harvey P. Dale, Aug 19 2018 *)

Crossrefs

Sequence in context: A111126 A165790 A077194 * A089478 A028967 A097530

Adjacent sequences: A038302 A038303 A038304 * A038306 A038307 A038308

Keyword

nonn,tabl,easy

Author

N. J. A. Sloane.

Status

approved