

A161926


Numbers occurring at least twice in A114381, in order of second appearance.


3



991, 104435, 712363, 1932085, 4816631, 2685019, 9180975, 13841797, 27084303, 10089313, 18865937, 72584313, 12235713, 29071365, 59499291, 27454813, 40349105, 18039791, 35811791, 26392813, 62173813, 79465965, 59293917
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OFFSET

1,1


COMMENTS

Numbers that have three occurrences in A114381 are not known to date.


LINKS

Klaus Brockhaus, Table of n, a(n) for n=1..222.


EXAMPLE

A114381(11) = A114381(14) = 991; A114381(193) = A114381(348) = 104435; A114381(654) = A114381(2364) = 712363.


PROG

(PARI) /* gives terms and index of second occurrence */ {m=100000; S=[]; c=0; for(k=1, m, a=sum(j=prime(k), prime(k+1), prime(j)); S=setunion(S, Set(a)); d=#S; if(c==d, print(a, ", " , k), c=d))}


CROSSREFS

Cf. A114381, A161927 (index of second occurrence).
Sequence in context: A255098 A155509 A093177 * A172698 A109149 A237991
Adjacent sequences: A161923 A161924 A161925 * A161927 A161928 A161929


KEYWORD

nonn


AUTHOR

Klaus Brockhaus, Jul 01 2009


STATUS

approved



