A038216 Triangle whose (i,j)-th entry is binomial(i,j)*2^(i-j)*10^j.

1, 2, 10, 4, 40, 100, 8, 120, 600, 1000, 16, 320, 2400, 8000, 10000, 32, 800, 8000, 40000, 100000, 100000, 64, 1920, 24000, 160000, 600000, 1200000, 1000000, 128, 4480, 67200, 560000, 2800000, 8400000, 14000000, 10000000, 256, 10240

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..37.

Mathematica

Table[Binomial[i, j]2^(i-j) 10^j, {i, 0, 10}, {j, 0, i}]//Flatten (* Harvey P. Dale, Dec 05 2021 *)

Crossrefs

Sequence in context: A054790 A140393 A000170 * A213603 A145911 A234041

Adjacent sequences: A038213 A038214 A038215 * A038217 A038218 A038219

Keyword

nonn,tabl,easy

Author

N. J. A. Sloane.

Status

approved