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A006042 Nim-squares.
(Formerly M2251)
5
1, 3, 2, 6, 7, 5, 4, 13, 12, 14, 15, 11, 10, 8, 9, 24, 25, 27, 26, 30, 31, 29, 28, 21, 20, 22, 23, 19, 18, 16, 17, 52, 53, 55, 54, 50, 51, 49, 48, 57, 56, 58, 59, 63, 62, 60, 61, 44, 45, 47, 46, 42, 43, 41, 40, 33, 32, 34, 35, 39, 38, 36, 37, 103, 102, 100, 101, 97, 96, 98, 99 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

REFERENCES

J. H. Conway, On Numbers and Games. Academic Press, NY, 1976, pp. 51-53.

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

R. J. Mathar, Table of n, a(n) for n = 1..1000

G. P. Michon, Discussion of Conway's On2 [From John W. Layman, Nov 05 2010]

Index entries for sequences related to Nim-multiplication

FORMULA

a(n) = A051775(n,n).

MAPLE

read("transforms") ;

# insert source of nimprodP2() and A051775() from the b-file in A051776 here..

A006042 := proc(n)

     A051775(n, n) ;

end proc:

L := [seq( A006042(n), n=1..1000) ]; # R. J. Mathar, May 28 2011

CROSSREFS

Cf. A051775, A051776, A212200.

Sequence in context: A268933 A268831 A154435 * A100280 A268827 A092745

Adjacent sequences:  A006039 A006040 A006041 * A006043 A006044 A006045

KEYWORD

nonn,nice,easy

AUTHOR

N. J. A. Sloane

EXTENSIONS

a(1)-a(49) confirmed, a(50)-a(71) added by John W. Layman, Nov 05 2010

STATUS

approved

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Last modified March 30 15:48 EDT 2017. Contains 284302 sequences.