1,1

The prime corresponding to a(4) is a 5156-digit prime.

v={}; Do[If[PrimeQ[n^n + n! + n*n + n/n], v=Append[v, n]; Print[v]], {n, 3250}]

Cf. A084914, A084852.

Sequence in context: A046474 A056146 A115835 this_sequence A072712 A046476 A078682

Adjacent sequences: A089675 A089676 A089677 this_sequence A089679 A089680 A089681

nonn

Farideh Firoozbakht (f.firoozbakht(AT)sci.ui.ac.ir), Jan 06 2004