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A127018 Least s with s, t both semiprime and s+2n = t. 1

%I

%S 4,6,4,6,4,9,21,6,4,6,4,9,9,6,4,6,4,10,39,6,4,14,9,9,15,6,4,6,4,9,15,

%T 10,21,6,4,10,21,6,4,6,4,9,9,6,4,14,21,10,21,6,4,14,9,10,9,6,4,6,4,9,

%U 21,9,15,6,4,9,9,6,4,6,4,14,9,10,9,6,4,10,25,6,4,14,21,9,15,6,4,9,9,14,21,10

%N Least s with s, t both semiprime and s+2n = t.

%Y Cf. A127019, A020483.

%K nonn

%O 1,1

%A _Rick L. Shepherd_, Jan 02 2007

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Last modified November 18 17:33 EST 2019. Contains 329287 sequences. (Running on oeis4.)