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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Row sums of A183043.

LINKS

Table of n, a(n) for n=0..47.

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

Cf. A065775, A183043.

Sequence in context: A070875 A091522 A020711 * A133756 A196936 A188196

Adjacent sequences:  A183041 A183042 A183043 * A183045 A183046 A183047

KEYWORD

nonn

AUTHOR

Clark Kimberling, Dec 20 2010

STATUS

approved

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Last modified January 25 16:01 EST 2022. Contains 350572 sequences. (Running on oeis4.)