The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A047377

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A047377

Numbers that are congruent to {0, 1, 4, 5} mod 7.
(history; published version)

#29 by Charles R Greathouse IV at Thu Sep 08 08:44:57 EDT 2022

PROG

(MAGMAMagma) [n : n in [0..150] | n mod 7 in [0, 1, 4, 5]]; // Wesley Ivan Hurt, May 24 2016

Discussion

Thu Sep 08

08:44

OEIS Server: https://oeis.org/edit/global/2944

#28 by Peter Luschny at Thu Dec 23 10:31:49 EST 2021

STATUS

editing

approved

#27 by Peter Luschny at Thu Dec 23 10:31:39 EST 2021

MATHEMATICA

a[n_] := n + Floor[(n - 1)/2] + Floor[(n - 3)/4];

Table[a[n], {n, 1, 64}] (* Peter Luschny, Dec 23 2021 *)

STATUS

approved

editing

#26 by Bruno Berselli at Wed May 25 05:16:34 EDT 2016

STATUS

reviewed

approved

#25 by Michel Marcus at Wed May 25 05:08:09 EDT 2016

STATUS

proposed

reviewed

#24 by Bruno Berselli at Wed May 25 02:57:55 EDT 2016

STATUS

editing

proposed

#23 by Bruno Berselli at Wed May 25 02:57:51 EDT 2016

FORMULA

a(n) = (14*n-15-3*i^(2n2*n)+(1-i)*i^(-n)+(1+i)*i^n)/8, where i=sqrt(-1).

STATUS

proposed

editing

#22 by Bruno Berselli at Wed May 25 02:53:08 EDT 2016

STATUS

editing

proposed

#21 by Bruno Berselli at Wed May 25 02:52:58 EDT 2016

FORMULA

a(n) = (14n14*n-15-3*i^(2n)+(1-i)*i^(-n)+(1+i)*i^n)/8 , where i=sqrt(-1).

a(2n2k) = A047383(nk), a(2n2k-1) = A047345(nk). (End)

STATUS

proposed

editing

#20 by Ilya Gutkovskiy at Wed May 25 01:15:58 EDT 2016

STATUS

editing

proposed