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A145828 Squares in A145768 (XOR of squares of the numbers 1...n). 3
1, 16, 1, 225, 0, 256, 400, 961, 256, 2401, 4225, 50176, 9216, 9216, 113569, 20736, 518400, 160000, 893025, 390625, 861184, 685584, 134689, 861184, 3568321, 389376, 6806881, 12730624, 12730624, 4260096, 105534529 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

PROG

(PARI) an=0; for( i=1, 10^4, an=bitxor(an, i^2); issquare(an) & print1(an", "))

CROSSREFS

A145828 = A145768 intersect A000290; a(n) = A145768(A145827(n)) = A145829(n)^2.

Sequence in context: A036179 A099923 A105671 * A095876 A095851 A095881

Adjacent sequences:  A145825 A145826 A145827 * A145829 A145830 A145831

KEYWORD

easy,nice,nonn

AUTHOR

M. F. Hasler (www.univ-ag.fr/~mhasler), Oct 20 2008

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Last modified February 16 20:01 EST 2012. Contains 205955 sequences.