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A124622 Smallest odd interprime divisible by n-th odd prime. 7

%I

%S 9,15,21,99,39,459,399,69,667,93,111,205,129,705,1113,885,915,2613,

%T 1207,803,1817,747,1869,2619,909,309,2247,7957,1243,381,393,3699,2085,

%U 3129,453,8635,489,501,16089,1611,5249,9741,1737,2955,2985,3165,2007,19295

%N Smallest odd interprime divisible by n-th odd prime.

%F a(n) = (prime(A126233(n)+1) + prime(A126233(n)))/2.

%t f[n_] := Block[{k = 1, c},While[c = (Prime[k + 1] + Prime[k])/2; Mod[c, 2] == 0 || Mod[c, Prime[n + 1]] > 0, k++ ];c];Table[f[n], {n, 50}] (* _Ray Chandler_, Jan 09 2007 *)

%Y Cf. A072569, A072572, A072573, A126228, A126229, A126230, A124619, A124620, A126231.

%K nonn

%O 1,1

%A _Artur Jasinski_, Dec 21 2006

%E Extended by _Ray Chandler_, Jan 09 2007

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Last modified June 12 10:58 EDT 2021. Contains 344947 sequences. (Running on oeis4.)