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Search: id:A034266
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A034266 Partial sums of A027818. +0
3
0, 1, 15, 99, 435, 1485, 4257, 10725, 24453, 51480, 101530, 189618, 338130, 579462, 959310, 1540710, 2408934, 3677355, 5494401, 8051725, 11593725, 16428555, 22940775, 31605795, 43006275, 57850650, 76993956, 101461140, 132473044 (list; graph; listen)
OFFSET

0,3

REFERENCES

A. H. Beiler, Recreations in the Theory of Numbers, Dover, N. Y., 1964, pps. 194-196.

FORMULA

a(n)=(7n+8)*C(n+7, 7)/8.

G.f.: x*(1+6*x)/(1-x)^9.

CROSSREFS

a(n)=f(n, 6) where f is given in A034261. Cf. A027818, A053367, A034266.

Cf. A093564 ((7, 1) Pascal, column m=8).

Sequence in context: A108681 A108254 A000973 this_sequence A087661 A111370 A093739

Adjacent sequences: A034263 A034264 A034265 this_sequence A034267 A034268 A034269

KEYWORD

easy,nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

EXTENSIONS

Better description from Barry E. Williams, Jan 25 2000

Corrected and extended Apr 21 2000 - njas

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Last modified July 26 23:19 EDT 2008. Contains 142293 sequences.


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