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A181520
2*A181518(n)-A181516(n).
0
1, 1, 3, 3, 3, 1, 3, 3, 3, 3, 3, 3, 3, 5, 3, 3, 3, 5, 1, 3, 3, 3, 3, 5, 3, 3, 3, 5, 5, 3, 3, 3, 5, 3, 5, 5, 3, 5, 5, 5, 3, 3, 3, 5, 5, 5, 7, 5, 5, 5, 5, 5, 7, 5, 7, 3, 3, 3, 5, 5, 5, 7, 3, 3, 5, 5, 5, 5, 3, 5, 5, 7, 5, 5, 7, 7, 7, 3, 3, 3, 7, 3, 5, 5, 7, 5, 7, 7, 7, 5, 7, 7, 7, 9, 3, 3, 3, 5, 3, 3, 3, 3, 5, 5, 3
OFFSET
1,3
CROSSREFS
Sequence in context: A140366 A167817 A153401 * A256736 A372700 A123073
KEYWORD
nonn
AUTHOR
Vladimir Shevelev, Oct 26 2010
EXTENSIONS
More terms from R. J. Mathar, Nov 04 2010
STATUS
approved