This site is supported by donations to The OEIS Foundation.

 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!)
 A187305 Number of 10-step one space leftwards or up, two space rightwards or down asymmetric rook's tours on an n X n board summed over all starting positions 1
 0, 0, 0, 3096, 44824, 187924, 505878, 1044900, 1847506, 2912204, 4254568, 5853664, 7715596, 9827696, 12192058, 14805028, 17667036, 20777536, 24136566, 27744092, 31600114, 35704632, 40057646, 44659156, 49509162, 54607664, 59954662, 65550156 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 COMMENTS Row 10 of A187296 LINKS R. H. Hardin, Table of n, a(n) for n = 1..50 FORMULA Empirical: a(n) = 124248*n^2 - 1238146*n + 2807812 for n>17 CROSSREFS Sequence in context: A092129 A251871 A206132 * A236121 A252884 A103523 Adjacent sequences:  A187302 A187303 A187304 * A187306 A187307 A187308 KEYWORD nonn AUTHOR R. H. Hardin Mar 08 2011 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.

Last modified November 18 00:38 EST 2017. Contains 294837 sequences.