The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A176525

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A176525

Fermi-Dirac semiprimes: products of two distinct terms of A050376.
(history; published version)

#23 by Wesley Ivan Hurt at Tue Oct 31 19:21:14 EDT 2023

STATUS

editing

approved

#22 by Wesley Ivan Hurt at Tue Oct 31 19:21:06 EDT 2023

NAME

Fermi-Dirac semiprimes: products of two distinct terms of A050376.

STATUS

approved

editing

#21 by Joerg Arndt at Fri Nov 27 03:26:33 EST 2020

STATUS

reviewed

approved

#20 by Michel Marcus at Fri Nov 27 03:25:31 EST 2020

STATUS

proposed

reviewed

#19 by Amiram Eldar at Fri Nov 27 03:15:15 EST 2020

STATUS

editing

proposed

#18 by Amiram Eldar at Fri Nov 27 03:10:31 EST 2020

REFERENCES

V. Vladimir S. Shevelev, Multiplicative functions in the Fermi-Dirac arithmetic, Izvestia Vuzov of the North-Caucasus region, Nature sciences , Vol. 4 (1996), pp. 28-43 [Russian].

LINKS

S. Simon Litsyn and V. Vladimir S. Shevelev, <a href="http://www.emis.de/journals/INTEGERS/papers/h33/h33.Abstract.html">On factorization of integers with restrictions on the exponent</a>, INTEGERS: Electronic Journal of Combinatorial Number Theory, Vol. 7 (2007), Article #A33, pp. 1-36.

#17 by Amiram Eldar at Fri Nov 27 03:08:18 EST 2020

MATHEMATICA

Select[Range[120], Plus @@ DigitCount[Last /@ FactorInteger[#], 2, 1] == 2 &] (* Amiram Eldar, Nov 27 2020 *)

STATUS

approved

editing

#16 by N. J. A. Sloane at Sat Dec 21 14:41:26 EST 2019

STATUS

proposed

approved

#15 by Peter Munn at Thu Dec 19 16:51:57 EST 2019

STATUS

editing

proposed

#14 by Peter Munn at Thu Dec 19 16:50:05 EST 2019

EXTENSIONS

Duplicate Effectively duplicate content (due to duplicate referenced sequence ) removed by Peter Munn, Dec 19 2019