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!)
A020496 From the ground state energy of a variant of the Hubbard Hamiltonian for 2 holes on a lattice of n sites. 0
1, 4, 19, 55, 181, 461 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,2

LINKS

Table of n, a(n) for n=4..9.

C. B. Li and D. C. Mattis, t-J Model with Infinite-Ranged Hopping, Mod. Phys. Lett. B, 11 (1997), 115-121.

CROSSREFS

Sequence in context: A122681 A215862 A174612 * A108484 A283333 A134507

Adjacent sequences:  A020493 A020494 A020495 * A020497 A020498 A020499

KEYWORD

nonn

AUTHOR

M. L. Glasser (laryg(AT)sun.mcs.clarkson.edu) and Don Matthis (Utah).

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 January 24 10:42 EST 2020. Contains 331193 sequences. (Running on oeis4.)