A157414 - OEIS

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A157414

Decimal expansion of sum_{q = semiprimes = A001358} 1/(q*2^q).

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, 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, 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 (list; constant; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	LINKS	`R. J. Mathar, Series of reciprocal powers of k-almost primes, arxiv:0803.0900, eq. (66).`
	FORMULA	`A002162 = sum_{n>=1} 1/(n*2^n) = 1/2 + A157413 + this_constant_here + equivalent terms of higher order k-almost primes.`
	EXAMPLE	`0.0185502662799497065892654852882047774... = 1/(42^4)+1/(62^6)+1/(92^9)+1/(102^10)+... = sum_{i>=1} 1/(A001358(i)*2^A001358(i)).`
	CROSSREFS	`Sequence in context: A199956 A000052 A072991 * A021543 A201295 A011107` `Adjacent sequences: A157411 A157412 A157413 * A157415 A157416 A157417`
	KEYWORD	`cons,nonn`
	AUTHOR	`R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 28 2009`

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Last modified February 18 00:14 EST 2012. Contains 206085 sequences.