A102384 A020639(A004094(n)).

1, 2, 2, 2, 61, 23, 2, 821, 2, 5, 4201, 2, 2, 2, 137, 7, 2, 270131, 2, 5, 13, 2, 2, 2, 61277761, 17, 2, 7, 2, 5, 3373, 2, 2, 2, 113647, 53, 2, 274359834731, 2, 5, 109, 2, 2, 2, 19, 23888027348153, 7, 34613, 2, 5, 7, 2, 2, 1091, 919, 86936981079782063, 139, 29

Offset

0,2

Links

Table of n, a(n) for n=0..57.

Example

n=25 -> 2^25=33554432 -> 23445533=17*23*61*983: a(25)=17.

Crossrefs

Cf. A102382, A102383, A102385.

Sequence in context: A045983 A266713 A226745 * A275533 A304463 A066736

Adjacent sequences: A102381 A102382 A102383 * A102385 A102386 A102387

Keyword

nonn

Author

Reinhard Zumkeller, Jan 06 2005

Extensions

Corrected by T. D. Noe, Nov 15 2006

Status

approved