A038240 Triangle whose (i,j)-th entry is binomial(i,j)*4^(i-j)*10^j.

1, 4, 10, 16, 80, 100, 64, 480, 1200, 1000, 256, 2560, 9600, 16000, 10000, 1024, 12800, 64000, 160000, 200000, 100000, 4096, 61440, 384000, 1280000, 2400000, 2400000, 1000000, 16384, 286720, 2150400, 8960000, 22400000, 33600000

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..33.

Crossrefs

Sequence in context: A233452 A061682 A246882 * A369613 A211160 A310535

Adjacent sequences: A038237 A038238 A038239 * A038241 A038242 A038243

Keyword

nonn,tabl,easy

Author

N. J. A. Sloane

Status

approved