A154506 Primes of the form concatenation(A141468(k), k).

43, 107, 149, 2719, 3323, 5641, 5843, 7253, 7757, 8059, 8563, 9067, 12697, 182141, 188147, 224177, 279221, 298237, 300239, 315251, 350281, 360289, 362291, 371299, 388313, 412333, 418339, 424343, 448363, 453367, 460373, 469379, 473383, 549449, 558457

Offset: 1

Author

Juri-Stepan Gerasimov, Jan 11 2009

Keywords

• nonn
• base

Examples

			43 is a term since 43 is a prime and A141468(3)=4.
107 is a term since 107 is a prime and A141468(7)=10.
		

Crossrefs

Cf. A141468.

Programs

Maple

# read transforms; read b-file for A141468 (giving list b1); then:
t0:=[];
for n from 2 to nops(b1) do
t1:=cat(b1[n],n);
t2:=stoint(t1);
if isprime(t2) then t0:=[op(t0), t2]; fi;
od:
t0; # N. J. A. Sloane, Jun 27 2009

Extensions

Edited and extended from a(13) onwards by N. J. A. Sloane, Jun 26 2009