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Triangle read by rows, in which the n-th row contains n smallest numbers not occurring earlier such that the concatenation of terms of a row yields a prime.
1

%I #6 Dec 05 2013 19:56:13

%S 2,1,3,4,5,7,6,8,9,17,10,11,12,13,43,14,15,16,18,19,21,20,22,23,24,25,

%T 26,39,27,28,29,30,31,32,33,47,34,35,36,37,38,40,41,42,59,44,45,46,48,

%U 49,50,51,52,53,71,54,55,56,57,58,60,61,62,63,64,99,65,66,67,68,69,70

%N Triangle read by rows, in which the n-th row contains n smallest numbers not occurring earlier such that the concatenation of terms of a row yields a prime.

%e 2

%e 1 3

%e 4 5 7

%e 6 8 9 17

%e 10 11 12 13 43

%e ...

%Y Cf. A082751.

%K base,nonn,tabl

%O 1,1

%A _Amarnath Murthy_, Apr 17 2003

%E More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 23 2003