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A038270 Triangle whose (i,j)-th entry is binomial(i,j)*7^(i-j)*4^j. 0
1, 7, 4, 49, 56, 16, 343, 588, 336, 64, 2401, 5488, 4704, 1792, 256, 16807, 48020, 54880, 31360, 8960, 1024, 117649, 403368, 576240, 439040, 188160, 43008, 4096, 823543, 3294172, 5647152, 5378240, 3073280, 1053696, 200704, 16384 (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..35.

CROSSREFS

Sequence in context: A270937 A270320 A270332 * A241359 A239602 A100976

Adjacent sequences:  A038267 A038268 A038269 * A038271 A038272 A038273

KEYWORD

nonn,tabl,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified December 15 04:20 EST 2019. Contains 329991 sequences. (Running on oeis4.)