A047883 Squares on unbounded chessboard for which the least number of knight's moves from corner (0,0) is n.

0, 2, 9, 20, 27, 32, 39, 46, 53, 60, 67, 74, 81, 88, 95, 102, 109, 116, 123, 130, 137, 144, 151, 158, 165, 172, 179, 186, 193, 200, 207, 214, 221, 228, 235

Offset

0,2

Links

Table of n, a(n) for n=0..34.

Formula

a(n)=7+a(n-1) for n >= 6.

Mathematica

Join[{0, 2, 9, 20, 27}, NestList[#+7&, 32, 30]] (* Harvey P. Dale, Sep 07 2013 *)

Crossrefs

Cf. A098500 (partial sums).

Sequence in context: A116014 A090939 A077338 * A042915 A007115 A154495

Adjacent sequences: A047880 A047881 A047882 * A047884 A047885 A047886

Keyword

nonn

Author

Clark Kimberling

Status

approved