A084430 Smallest prime with "n^3" as central digit(s).
101, 113, 181, 1277, 2647, 11251, 12161, 23431, 15121, 17291, 410009, 213319, 117281, 421973, 127447, 233759, 240967, 249131, 158329, 168599, 180001, 192611, 1106489, 1121671, 2138249, 2156251, 1175767, 1196837, 2219527, 2243893, 1270001, 3297911, 2327681
Offset: 0
Programs
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PARI
a(n) = {n = n^3; for (i = 1, 9, forstep (j=1, 9, 2, v = j + 10*n + i*10^(1+length(Str(n))); if (isprime(v), return (v)); ); ); } \\ Michel Marcus, Oct 05 2013
Extensions
More terms from Michel Marcus, Oct 05 2013