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A083758 Beginning with 2, rearrangement of primes (other than 5) such that every concatenation beginning with the first term is a prime. 2
2, 3, 11, 7, 41, 31, 17, 163, 23, 79, 197, 241, 29, 37, 59, 193, 227, 229, 239, 439, 929, 337, 257, 1447, 509, 19, 293, 1723, 1619, 937, 179, 367, 251, 1063, 4241, 1291, 521, 1951, 443, 139, 191, 1753, 1217, 673, 53, 883, 809, 109, 5381, 3733, 311, 967, 449 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Conjecture: every prime other than 5 is a member.

LINKS

Giorgos Kalogeropoulos, Table of n, a(n) for n = 1..800

MATHEMATICA

a[1]=2; a[n_]:=a[n]=Module[{v=1, k=Table[a[m], {m, n-1}]}, While[PrimeQ[FromDigits@Join[Flatten[IntegerDigits/@k], IntegerDigits[t=Prime[v]]]]==False||MemberQ[k, t], v++]; k=Join[k, {t}]; t]; Table[a[i], {i, 60}]  (* Giorgos Kalogeropoulos, May 28 2019 *)

CROSSREFS

Cf. A083759.

Sequence in context: A145077 A127376 A086146 * A127494 A320264 A265563

Adjacent sequences:  A083755 A083756 A083757 * A083759 A083760 A083761

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), May 06 2003

EXTENSIONS

More terms from Sean A. Irvine, Dec 15 2009

STATUS

approved

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Last modified October 14 09:25 EDT 2019. Contains 327995 sequences. (Running on oeis4.)