1,1

Probably finite. No other terms up to 10^9.

Cf. A022552, A014158, A115159, A115160, A115161, A115162.

Sequence in context: A142794 A123043 A142014 this_sequence A044228 A044609 A142054

Adjacent sequences: A115160 A115161 A115162 this_sequence A115164 A115165 A115166

nonn

Giovanni Resta (g.resta(AT)iit.cnr.it), Jan 15 2006