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 A176525 Fermi-Dirac semiprimes: products of two distinct terms of A050376 5
 6, 8, 10, 12, 14, 15, 18, 20, 21, 22, 26, 27, 28, 32, 33, 34, 35, 36, 38, 39, 44, 45, 46, 48, 50, 51, 52, 55, 57, 58, 62, 63, 64, 65, 68, 69, 74, 75, 76, 77, 80, 82, 85, 86, 87, 91, 92, 93, 94, 95, 98, 99, 100, 106, 111, 112, 115, 116, 117, 118, 119, 122 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The sequence essentially differs from A000379 beginning with a(108)=212 (not 210). All squarefree terms of A001358 are in the sequence. The sequence essentially differs also from A064176 which contains products of even distinct terms of A050376 REFERENCES V. S. Shevelev, Multiplicative functions in the Fermi-Dirac arithmetic, Izvestia Vuzov of the North-Caucasus region, Nature sciences 4 (1996), 28-43 [Russian]. LINKS Peter J. C. Moses, Table of n, a(n) for n = 1..10000 S. Litsyn and V. S. Shevelev, On factorization of integers with restrictions on the exponent, INTEGERS: Electronic Journal of Combinatorial Number Theory, 7 (2007), #A33, 1-36. FORMULA If a(n)=u*v, u=1}(-1)^(i-1)*floor(v/u^i). CROSSREFS Cf. A001358, A050376, A000379, A176472, A176509, A064380, A050292. Cf. A064176. [From R. J. Mathar, Apr 29 2010] Sequence in context: A131181 A064176 A000379 * A065985 A233421 A060652 Adjacent sequences:  A176522 A176523 A176524 * A176526 A176527 A176528 KEYWORD nonn AUTHOR Vladimir Shevelev, Apr 19 2010, Apr 20 2010 STATUS approved

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