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A118750 a(n) = product[k=1..n] P(k), where P(k) is the largest prime <= 3*k. a(n) = product[k=1..n] A118749(k). 8

%I

%S 3,15,105,1155,15015,255255,4849845,111546435,2565568005,74401472145,

%T 2306445636495,71499814731345,2645493145059765,108465218947450365,

%U 4664004414740365695,219208207492797187665,10302785752161467820255

%N a(n) = product[k=1..n] P(k), where P(k) is the largest prime <= 3*k. a(n) = product[k=1..n] A118749(k).

%C Differs from (after first term) A048599 "Partial products of the sequence (A001097) of twin primes" after 8th term. Differs from (after first term) A070826 "One half of product of first n primes A000040" after 9th term. Analogous to A118455 a(1)=1. a(n) = product{k=1..n} P(k), where P(k) is the largest prime <= k.

%Y Cf. A020482, A049653, A060266-A060268, A060264, A060265, A060308, A118455, A118456, A118748.

%K easy,nonn

%O 1,1

%A _Jonathan Vos Post_, Apr 29 2006

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Last modified November 13 11:09 EST 2018. Contains 317133 sequences. (Running on oeis4.)