Search: id:A157414
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%I A157414
%S A157414 0,1,8,5,5,0,2,6,6,2,7,9,9,4,9,7,0,6,5,8,9,2,6,5,4,8,5,2,8,8,2,0,4,7,7,
%T A157414 7,4,3,0,1,6,8,9,3,1,8,6,9,2,7,5,1,2,7,0,3,2,8,2,8,9,3,0,0,3,5,0,1,5,8,
%U A157414 8,4,7,7,6,3,7,1,6,5,7,3,8,8,0,1,5,8,5,4,6,3,6,6,7,7,0,3,8,1,7,4,1,8,3
%N A157414 Decimal expansion of sum_{q = semiprimes = A001358} 1/(q*2^q).
%F A157414 A002162 = sum_{n>=1} 1/(n*2^n) = 1/2 + A157413 + this_constant_here + 
               equivalent terms of higher order k-almost primes.
%e A157414 0.0185502662799497065892654852882047774... = 1/(4*2^4)+1/(6*2^6)+1/(9*2^9)+1/
               (10*2^10)+... = sum_{i>=1} 1/(A001358(i)*2^A001358(i)).
%Y A157414 Sequence in context: A021121 A000052 A072991 this_sequence A021543 A011107 
               A154433
%Y A157414 Adjacent sequences: A157411 A157412 A157413 this_sequence A157415 A157416 
               A157417
%K A157414 cons,nonn
%O A157414 0,3
%A A157414 R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 28 2009

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