A069631 a(1) = 4; a(2n) = smallest prime starting (most significant digits) with a(2n-1). a(2n+1) = smallest prime ending (least significant digits)in a(2n).

4, 41, 241, 2411, 32411, 324113, 6324113, 63241133, 1563241133, 15632411339, 815632411339, 81563241133909, 1981563241133909, 198156324113390947, 24198156324113390947, 2419815632411339094781, 212419815632411339094781

Offset

1,1

Links

Table of n, a(n) for n=1..17.

Crossrefs

Cf. A069614 to A069621, A069628 to A069636.

Sequence in context: A273418 A273446 A068169 * A069616 A231653 A057419

Adjacent sequences: A069628 A069629 A069630 * A069632 A069633 A069634

Keyword

nonn,base

Author

Amarnath Murthy, Mar 27 2002

Extensions

Edited and extended by Robert G. Wilson v, Apr 03 2002

Status

approved