1,1
Different from A000396.
Cf. A000396, A136007.
Sequence in context: A201186 A060286 * A000396 A066239 A097464 A166998
Adjacent sequences: A152950 A152951 A152952 * A152954 A152955 A152956
nonn
Omar E. Pol (info(AT)polprimos.com), Dec 15 2008