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

 

Logo

Annual appeal: Please make a donation to keep the OEIS running! Over 6000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A036410 G.f.: (1+x^6)/((1-x)*(1-x^3)*(1-x^4)). 1
1, 1, 1, 2, 3, 3, 5, 6, 7, 9, 11, 12, 15, 17, 19, 22, 25, 27, 31, 34, 37, 41, 45, 48, 53, 57, 61, 66, 71, 75, 81, 86, 91, 97, 103, 108, 115, 121, 127, 134, 141, 147, 155, 162, 169, 177, 185, 192, 201, 209, 217, 226, 235, 243, 253, 262, 271, 281 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..57.

G. Nebe, E. M. Rains and N. J. A. Sloane, Self-Dual Codes and Invariant Theory, Springer, Berlin, 2006.

Index entries for Molien series

Index entries for linear recurrences with constant coefficients, signature (1,1,0,-1,-1,1).

FORMULA

Ceiling((n+1)^2/12).

a(n)= +a(n-1) +a(n-2) -a(n-4) -a(n-5) +a(n-6). G.f. ( -1-x^4+x^2 ) / ( (1+x)*(1+x+x^2)*(x-1)^3 ). - R. J. Mathar, Jan 22 2011

PROG

(Maxima)  makelist(coeff(taylor((1+x^6)/((1-x)*(1-x^3)*(1-x^4)), x, 0, n), x, n), n, 0, 57);  [Bruno Berselli, May 30 2011]

CROSSREFS

Cf. A008724, A001399.

Sequence in context: A220838 A236294 A251419 * A008670 A218950 A193748

Adjacent sequences:  A036407 A036408 A036409 * A036411 A036412 A036413

KEYWORD

nonn

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 | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified November 22 05:36 EST 2017. Contains 295076 sequences.