A038309 Triangle whose (i,j)-th entry is binomial(i,j)*10^(i-j)*7^j.

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

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