
12, 28, 44, 60, 76, 92, 108, 124, 140, 156, 172, 188, 204, 220, 236, 252, 268, 284, 300, 316, 332, 348, 364, 380, 396, 412, 428, 444, 460, 476, 492, 508, 524, 540, 556, 572, 588, 604, 620, 636, 652, 668, 684, 700, 716, 732, 748, 764, 780, 796, 812, 828, 844
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OFFSET

1,1


COMMENTS

For n > 3, the number of squares on the infinite 4column chessboard at <= n knight moves from any fixed start point.


LINKS



EXAMPLE



MATHEMATICA



PROG



CROSSREFS



KEYWORD

nonn,easy


AUTHOR



STATUS

approved

