A132937 Concatenation of first n odd isolated primes.

23, 2337, 233747, 23374753, 2337475367, 233747536779, 23374753677983, 2337475367798389, 233747536779838997, 233747536779838997113, 233747536779838997113127, 233747536779838997113127131

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..250

C. K. Caldwell, The Prime Pages.

Omar E. Pol, Determinacion geometrica de los numeros primos y perfectos.

Mathematica

With[{ips=Transpose[Select[Partition[Prime[Range[2, 50]], 3, 1], Min[ Differences[#]]>2&]][[2]]}, Table[FromDigits[Flatten[ IntegerDigits/@ Take[ips, n]]], {n, Length[ips]}]] (* Harvey P. Dale, Sep 17 2013 *)

Crossrefs

Isolated primes: A007510. Cf: A007908, A019518, A059996, A078795, A089933.

Sequence in context: A138735 A220653 A281787 * A068655 A336170 A232362

Adjacent sequences: A132934 A132935 A132936 * A132938 A132939 A132940

Keyword

easy,nonn,base

Author

Omar E. Pol, Sep 05 2007

Status

approved