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A328467 Row 4 of A328464: a(n) = A276156(16n - 8) / 30. 3

%I

%S 1,8,78,85,1002,1009,1079,1086,17018,17025,17095,17102,18019,18026,

%T 18096,18103,323324,323331,323401,323408,324325,324332,324402,324409,

%U 340341,340348,340418,340425,341342,341349,341419,341426,7436430,7436437,7436507,7436514,7437431,7437438,7437508,7437515,7453447,7453454,7453524

%N Row 4 of A328464: a(n) = A276156(16n - 8) / 30.

%H Antti Karttunen, <a href="/A328467/b328467.txt">Table of n, a(n) for n = 1..8192</a>

%H <a href="/index/Pri#primorialbase">Index entries for sequences related to primorial base</a>

%F a(n) = (1/30) * A276156(16*n - 8).

%o (PARI)

%o A002110(n) = prod(i=1,n,prime(i));

%o A276156(n) = { my(p=2,pr=1,s=0); while(n,if(n%2,s += pr); n >>= 1; pr *= p; p = nextprime(1+p)); (s); };

%o A328467(n) = (A276156((16*n)-8) / 30);

%Y Row 4 of A328464.

%Y Cf. A002110, A276156, A328461.

%K nonn

%O 1,2

%A _Antti Karttunen_, Oct 18 2019

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Last modified June 19 09:09 EDT 2021. Contains 345126 sequences. (Running on oeis4.)