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#52 by Michael De Vlieger at Mon Sep 18 15:39:16 EDT 2023
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#51 by Stefano Spezia at Mon Sep 18 15:36:57 EDT 2023
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#50 by Michel Marcus at Mon Sep 18 11:02:56 EDT 2023
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#49 by Michel Marcus at Mon Sep 18 11:02:54 EDT 2023
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| PROG
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(sageMathSageMath)
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| STATUS
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proposed
editing
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#48 by Chai Wah Wu at Mon Sep 18 10:21:49 EDT 2023
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#47 by Chai Wah Wu at Mon Sep 18 10:21:46 EDT 2023
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| PROG
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(Python)
def A140106(n): return n-2>>1 if n>1 else 0 # Chai Wah Wu, Sep 18 2023
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| STATUS
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approved
editing
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#46 by N. J. A. Sloane at Sun Feb 12 10:17:54 EST 2023
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#45 by G. C. Greubel at Fri Feb 10 23:55:43 EST 2023
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#44 by G. C. Greubel at Fri Feb 10 23:55:33 EST 2023
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| LINKS
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G. C. Greubel, <a href="/A140106/b140106.txt">Table of n, a(n) for n = 1..5000</a>
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| FORMULA
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For n > 1, a(n) = floor((n-2)/2), for n > 1, otherwise 0. - Washington Bomfim, Feb 12 2011
For n > 1, a(n) = floor(A129194(n - -1)/A022998(n)), for n)). - _ > 1. - _Paul Curtz_, Jul 23 2017
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| PROG
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(Magma)
A140106:= func< n | n eq 1 select 0 else Floor((n-2)/2) >;
[A140106(n): n in [1..80]]; // G. C. Greubel, Feb 10 2023
(sageMath)
def A140106(n): return 0 if (n==1) else (n-2)//2
[A140106(n) for n in range(1, 81)] # G. C. Greubel, Feb 10 2023
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| CROSSREFS
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Essentially the same as A004526.
Cf. A000554, A007304, A007997, A013929, A022998, A129194.
Cf. A047967, A129194, A235451, A285508, A321773.
Cf. A007304, A007997, A013929, A047967, A235451, A285508, A321773.
Essentially the same as A004526.
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| STATUS
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approved
editing
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#43 by N. J. A. Sloane at Wed Oct 21 22:47:30 EDT 2020
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