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%I #6 Dec 15 2017 17:34:54
%S 23,5711,1317192329,31374143475359,6167717379838997101103107,
%T 109113127131137139149151157163167173179,
%U 181191193197199211223227229233239241251257263269271
%N Prime groupings.
%C a(n) is formed by concatenating the next prime(n) primes.
%F The n-th term of the sequence is determined by grouping the prime numbers according to the natural order of primes themselves, e.g. the first prime is 2 so group the first two primes 2 and 3. Second prime is 3 so group the next 3 primes 5, 7 and 11, etc.
%K easy,nonn,base
%O 0,1
%A _Jason Earls_, Mar 01 2001
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