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Index of last term where no prime sums occur in A161190 in a 4 diagonal set of 24 terms.
4

%I #9 Dec 26 2023 19:07:39

%S 88,116,149,178,207,220,258,259,307,322,326,343,344,367,380,427,498,

%T 533,550,557,558,564,628,638,652,718,742,743,751,767,795,818,860,863,

%U 891,999,1000,1008,1009,1028,1034,1078,1088,1094,1111,1138,1199,1230,1234

%N Index of last term where no prime sums occur in A161190 in a 4 diagonal set of 24 terms.

%C This sequence comprises the indices for A161193.

%F These are the indices for the sets of 4 diagonals (comprising the 24 points on the circumference of a circle) where no primes occur.

%e a(1)=88 because that is the index of the first set of 24 terms in 4 diagonals where none is prime.

%o (UBASIC) See A161190.

%Y Cf. A161190, A161191, A161192, A161193.

%K easy,nonn,uned

%O 1,1

%A _Enoch Haga_, Jun 06 2009