login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A000750 Expansion of bracket function.
(Formerly M3851 N1576)
6
1, -5, 15, -35, 70, -125, 200, -275, 275, 0, -1000, 3625, -9500, 21250, -42500, 76875, -124375, 171875, -171875, 0, 621875, -2250000, 5890625, -13171875, 26343750, -47656250, 77109375, -106562500, 106562500, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

It appears that the (unsigned) sequence is identical to its 5th order absolute difference. - John W. Layman, Sep 23 2003

REFERENCES

H. W. Gould, Binomial coefficients, the bracket function and compositions with relatively prime summands, Fib. Quart. 2 (1964), 241-260.

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Table of n, a(n) for n=0..29.

FORMULA

G.f.: 1/((1+x)^5-x^5).

CROSSREFS

Cf. A000748, A000749, A001659, A006090, A049016.

Sequence in context: A069983 A005894 A015622 * A008487 A000743 A138779

Adjacent sequences:  A000747 A000748 A000749 * A000751 A000752 A000753

KEYWORD

sign,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified October 23 16:27 EDT 2014. Contains 248468 sequences.