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A053367 Partial sums of A050494. 4
1, 11, 63, 255, 825, 2277, 5577, 12441, 25740, 50050, 92378, 163098, 277134, 455430, 726750, 1129854, 1716099, 2552517, 3725425, 5344625, 7548255, 10508355, 14437215, 19594575 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

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

LINKS

Table of n, a(n) for n=0..23.

Index entries for linear recurrences with constant coefficients, signature (9,-36,84,-126,126,-84,36,-9,1).

FORMULA

a(n) = C(n+7, 7)*(3n+8)/8.

G.f.: (1+2*x)/(1-x)^9.

PROG

(PARI) a(n)=binomial(n+7, 7)*(3*n+8)/8 \\ Charles R Greathouse IV, Oct 07 2015

CROSSREFS

Cf. A050494.

Cf. A093560 ((3, 1) Pascal, column m=8).

Sequence in context: A162946 A298046 A120723 * A163706 A180763 A285361

Adjacent sequences:  A053364 A053365 A053366 * A053368 A053369 A053370

KEYWORD

easy,nonn

AUTHOR

Barry E. Williams, Jan 06 2000

STATUS

approved

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Last modified February 21 06:38 EST 2018. Contains 299390 sequences. (Running on oeis4.)