0,1

Prime versus probable prime status and proofs are given in the author's table.

C. Caldwell and H. Dubner, "Journal of Recreational Mathematics", Volume 28, No. 1, 1996-97, pp. 1-9.

P. De Geest, PDP Reference Table

a(n)=5 -> (10^5-1)-2*(10^4+1) = 79997.

Cf. A082697 up to A082720.

Sequence in context: A128551 A154942 A092330 this_sequence A060255 A154552 A100857

Adjacent sequences: A082713 A082714 A082715 this_sequence A082717 A082718 A082719

nonn,base

Patrick De Geest (pdg(AT)worldofnumbers.com), Apr 13 2003.