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A183044
Sums of least numbers of knight's moves on vertical segments (n,0) to (n,n) on infinite chessboard.
1
0, 5, 7, 10, 14, 21, 27, 38, 44, 57, 67, 82, 92, 111, 123, 144, 158, 181, 197, 224, 240, 269, 289, 320, 340, 375, 397, 434, 458, 497, 523, 566, 592, 637, 667, 714, 744, 795, 827, 880, 914, 969, 1005, 1064, 1100, 1161, 1201, 1264
OFFSET
0,2
COMMENTS
Row sums of A183043.
FORMULA
Empirical g.f.: x*(2*x^10+2*x^9-2*x^8-4*x^7-5*x^6-x^5+x^4-2*x^3-5*x^2-7*x-5) / ((x-1)^3*(x+1)^2*(x^2+1)*(x^2+x+1)). - Colin Barker, May 04 2014
CROSSREFS
Sequence in context: A070875 A091522 A020711 * A133756 A196936 A188196
KEYWORD
nonn
AUTHOR
Clark Kimberling, Dec 20 2010
STATUS
approved