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%I #2 Dec 05 2013 19:55:31
%S 4,6,9,14,21,32,45,62,81,104,133,164,201,242,285,332,385,444,505,572,
%T 645,716,795,878,975,1064,1165,1268,1375,1484,1611,1724,1855,1992,
%U 2149,2288,2439,2588,2751,2918,3091,3270,3451,3642,3835,4032,4255,4454,4665
%N a(1) = 4, a(n+1) is the smallest composite number > a(n) such that all of the differences a(n+1)-a(n) are distinct primes.
%C For the first 20 terms the differences are the first 19 primes in that order (from 2 to 67). But a(20) + 71 = 572 + 71 is a prime, so a(21) = 572 + 73.
%e a(18) = 444 = a(17) + 59 = 385 + 59. All the primes <59 have already been used.
%K nonn
%O 0,1
%A _Amarnath Murthy_, Aug 11 2002
%E More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 24 2003
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