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A069634 a(1) = 7; a(2n) = smallest prime starting (most significant digits) with a(2n-1). a(2n+1) = smallest prime ending (least significant digits)in a(2n). 0
7, 71, 271, 2711, 52711, 5271107, 95271107, 9527110787, 59527110787, 5952711078773, 65952711078773, 6595271107877341, 36595271107877341, 3659527110787734161, 33659527110787734161, 3365952711078773416187 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..16.

CROSSREFS

Cf. A069614 to A069621, A069628 to A069636.

Sequence in context: A087390 A142928 A201261 * A069619 A137443 A100465

Adjacent sequences:  A069631 A069632 A069633 * A069635 A069636 A069637

KEYWORD

nonn,base

AUTHOR

Amarnath Murthy, Mar 27 2002

EXTENSIONS

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

STATUS

approved

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Last modified September 15 12:22 EDT 2019. Contains 327078 sequences. (Running on oeis4.)