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A145827 Indices such that A145768(n) is a square. 5
1, 7, 9, 14, 15, 16, 24, 33, 63, 89, 193, 240, 255, 271, 430, 448, 528, 575, 729, 742, 783, 903, 1297, 1776, 2409, 2623, 3494, 4079, 4159, 5439, 8278, 13631, 13737, 16128, 41825, 53007, 64344, 95985, 99015 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

PROG

(PARI) an=0; for(i=1, 10^5, an=bitxor(an, i^2); issquare(an)&print1(i", "))

CROSSREFS

A145828 = A145768 intersect A000290 = { A145768(a(n)) }.

Sequence in context: A160777 A063189 A004472 * A116025 A020939 A073457

Adjacent sequences:  A145824 A145825 A145826 * A145828 A145829 A145830

KEYWORD

easy,nonn

AUTHOR

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

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.