login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A166734 Determinant of the adjacency matrix of the n-cube graph Q_n. 1
0, -1, 0, 9, 0, 1476225, 0, 32724184981958652351324462890625, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

REFERENCES

N. Biggs, Algebraic Graph Theory, Cambridge Univ. Press 1974, p. 145.

LINKS

Jinyuan Wang, Table of n, a(n) for n = 0..12

FORMULA

a(n) = Product_{j=0..n} (n-2j)^binomial(n,j).

EXAMPLE

a(3) = (3^1)*(1^3)*((-1)^3)*((-3)^1) = 3*1*(-1)*(-3) = 9.

PROG

(PARI) a(n) = prod(j=0, n, (n-2*j)^binomial(n, j)); \\ Michel Marcus, Feb 08 2020

CROSSREFS

Sequence in context: A067479 A308803 A249489 * A155783 A257097 A256667

Adjacent sequences:  A166731 A166732 A166733 * A166735 A166736 A166737

KEYWORD

sign,easy

AUTHOR

Franz Vrabec, Oct 20 2009

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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 18 20:19 EDT 2020. Contains 337173 sequences. (Running on oeis4.)