A073468 First n-digit prime in "the sequence of even integers": 246810121416182022242628303234...

2, 41, 101, 8101, 30323, 1021, 2468101, 42628303, 246810121, 8101214161, 68101214161, 890929496981, 1081101121141, 68890929496981, 202224262830323, 828486889092949, 58606264666870727, 618202224262830323

Offset

1,1

Comments

Leading zeros count but are not printed (cf. A073186).

Links

Harvey P. Dale, Table of n, a(n) for n = 1..100

Example

a(6)=1021 because first 6-digit string in "the sequence of even integers": 246810121416182022242628303234... that forms a prime is "001021".

Mathematica

With[{c=Flatten[IntegerDigits/@(2Range[100])]}, Table[SelectFirst[ FromDigits/@ Partition[c, n, 1], PrimeQ], {n, 20}]] (* Harvey P. Dale, Jul 14 2019 *)

Crossrefs

Sequence in context: A041199 A100514 A285792 * A073186 A103335 A047936

Adjacent sequences: A073465 A073466 A073467 * A073469 A073470 A073471

Keyword

nonn,base

Author

Zak Seidov, Aug 22 2002

Extensions

More terms from Sascha Kurz, Feb 02 2003

Status

approved