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A038309 Triangle whose (i,j)-th entry is binomial(i,j)*10^(i-j)*7^j. 0
1, 10, 7, 100, 140, 49, 1000, 2100, 1470, 343, 10000, 28000, 29400, 13720, 2401, 100000, 350000, 490000, 343000, 120050, 16807, 1000000, 4200000, 7350000, 6860000, 3601500, 1008420, 117649, 10000000, 49000000, 102900000, 120050000 (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: A190996 A210283 A227473 * A185264 A128357 A024134

Adjacent sequences:  A038306 A038307 A038308 * A038310 A038311 A038312

KEYWORD

nonn,tabl,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified July 22 05:47 EDT 2019. Contains 325213 sequences. (Running on oeis4.)