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 A186337 Smallest integer that can be expressed as the sum of one or more consecutive semiprimes in exactly n ways. 7

%I #9 Mar 30 2012 17:37:34

%S 4,10,39,185,417,589,8351,40181,50809,69195,2614377,4044299,27691722,

%T 110046335,473061053

%N Smallest integer that can be expressed as the sum of one or more consecutive semiprimes in exactly n ways.

%e a(1) = 4 = A001358(1) is the first semiprime.

%e a(2) = 10 = A001358(1)+A001358(2) = 4+6 = A001358(4) = 10.

%e a(3) = 39 = 6 + 9 + 10 + 14 = 10 + 14 + 15 = 39.

%e a(4) = 185 = 58 + ... + 65 = 39 + ... + 51 = 4 + ... + 33 = 185.

%Y Cf. A001358, A112020, A186336.

%K nonn,more

%O 1,1

%A _Alois P. Heinz_, Feb 18 2011

%E a(11)-a(15) from _Donovan Johnson_, Feb 21 2011

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Last modified August 9 21:53 EDT 2024. Contains 375044 sequences. (Running on oeis4.)