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A084628 Floor(C(n+7,7)/C(n+3,3)). 1
1, 2, 3, 6, 9, 14, 20, 28, 39, 52, 68, 87, 110, 138, 171, 209, 253, 303, 361, 427, 501, 585, 678, 783, 899, 1027, 1169, 1325, 1496, 1683, 1887, 2109, 2350, 2611, 2893, 3198, 3526, 3878, 4257, 4662, 5096, 5559, 6053, 6580, 7140, 7735, 8366, 9035, 9744, 10494 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..49.

FORMULA

a(n)=floor(n^4/840+11n^3/420+179n^2/840+319n/420)+1

MATHEMATICA

Table[Floor[Binomial[n+7, 7]/Binomial[n+3, 3]], {n, 0, 50}]  [From Harvey P. Dale, Jan. 27, 2011]

CROSSREFS

Cf. A084627, A084629.

Sequence in context: A073736 A101593 A226893 * A002096 A094055 A094056

Adjacent sequences:  A084625 A084626 A084627 * A084629 A084630 A084631

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Jun 01 2003

STATUS

approved

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Last modified September 22 20:30 EDT 2018. Contains 315270 sequences. (Running on oeis4.)