1,2

a[6]=883,a[15]=410137,a[11]=88897,a[15]=470137,a[18]=1004737;

a[5] exists and <=2^80.

Cf. A062402, A095956.

Sequence in context: A077718 A093428 A081479 this_sequence A070294 A119531 A085832

Adjacent sequences: A096993 A096994 A096995 this_sequence A096997 A096998 A096999

nonn

Labos E. (labos(AT)ana.sote.hu), Jul 19 2004