A038272 Triangle whose (i,j)-th entry is binomial(i,j)*7^(i-j)*6^j.

1, 7, 6, 49, 84, 36, 343, 882, 756, 216, 2401, 8232, 10584, 6048, 1296, 16807, 72030, 123480, 105840, 45360, 7776, 117649, 605052, 1296540, 1481760, 952560, 326592, 46656, 823543, 4941258, 12706092, 18151560, 15558480, 8001504

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: A163842 A328697 A288245 * A249992 A366225 A223531

Adjacent sequences: A038269 A038270 A038271 * A038273 A038274 A038275

Keyword

nonn,tabl,easy

Author

N. J. A. Sloane.

Status

approved