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

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A320443 Number of lattice paths from {n}^n to {0}^n using steps that decrement one component by 1 such that for each point p we have abs(p_{i}-p_{(i mod n)+1}) <= 1 and the first component used is p_1. 1
 1, 1, 2, 72, 162000, 34907788800, 1178106009360998400, 8852509935316882311338419200, 20266951127950378632425380239663945561600, 18451222767137832036294073367248809725255450206074566400, 8461986175729341705763214274355536481199826590348664142270203923137228800 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS FORMULA a(n) = A318191(n,n). CROSSREFS Main diagonal of A318191. Sequence in context: A067689 A308941 A244148 * A079478 A221709 A036899 Adjacent sequences:  A320440 A320441 A320442 * A320444 A320445 A320446 KEYWORD nonn AUTHOR Alois P. Heinz, Jan 09 2019 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.

Last modified January 18 14:06 EST 2020. Contains 331011 sequences. (Running on oeis4.)