A132934 Concatenation of first n nonprime numbers.

1, 14, 146, 1468, 14689, 1468910, 146891012, 14689101214, 1468910121415, 146891012141516, 14689101214151618, 1468910121415161820, 146891012141516182021, 14689101214151618202122, 1468910121415161820212224, 146891012141516182021222425

Offset: 1

Author

Omar E. Pol, Sep 12 2007

Keywords

• easy
• nonn
• base

Comments

a(360) has 1001 decimal digits. - Michael De Vlieger, Jan 03 2017

Links

• Michael De Vlieger, Table of n, a(n) for n = 1..359

Crossrefs

Cf. A007908, A018252, A019518.

Programs

Mathematica

Table[FromDigits@ Flatten@ Map[IntegerDigits, Take[#, n]], {n, Length@ #}] &@ Select[Range@ 30, ! PrimeQ@ # &] (* Michael De Vlieger, Jan 03 2017 *)