1,2

(PARI) an=0; for( i=1, 10^7, an=bitxor(an, i^2); an & an==1<<valuation(an, 2) & print1(valuation(an, 2)", "))

A145830 = A145768 intersect A000079. A145768(A145830(n)) = 2^a(n). See also A145827-A145829.

Sequence in context: A165738 A159468 A010769 this_sequence A152990 A019249 A013440

Adjacent sequences: A145828 A145829 A145830 this_sequence A145832 A145833 A145834

more,nonn

M. F. Hasler (MHasler(AT)univ-ag.fr), Oct 20 2008