The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A038502

(Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A038502

Remove 3's from n.
(history; published version)

#59 by R. J. Mathar at Wed Mar 13 08:29:58 EDT 2024

STATUS

editing

approved

#58 by R. J. Mathar at Wed Mar 13 08:29:52 EDT 2024

FORMULA

a(n) = n / A038500(n). - R. J. Mathar, Mar 13 2024

STATUS

approved

editing

#57 by Peter Luschny at Sat Oct 29 04:51:27 EDT 2022

STATUS

reviewed

approved

#56 by Joerg Arndt at Sat Oct 29 04:37:23 EDT 2022

STATUS

proposed

reviewed

#55 by Amiram Eldar at Sat Oct 29 03:24:30 EDT 2022

STATUS

editing

proposed

#54 by Amiram Eldar at Sat Oct 29 03:17:28 EDT 2022

FORMULA

Sum_{k=1..n} a(k) ~ (3/8) * n^2. - Amiram Eldar, Oct 29 2022

STATUS

approved

editing

#53 by Charles R Greathouse IV at Thu Sep 08 08:44:53 EDT 2022

PROG

(MAGMAMagma) [n/3^Valuation(n, 3): n in [1..80]]; // Bruno Berselli, May 21 2013

Discussion

Thu Sep 08

08:44

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

#52 by N. J. A. Sloane at Fri Apr 16 00:00:00 EDT 2021

STATUS

proposed

approved

#51 by Wesley Ivan Hurt at Wed Apr 14 11:46:52 EDT 2021

STATUS

editing

proposed

#50 by Wesley Ivan Hurt at Wed Apr 14 11:46:46 EDT 2021

FORMULA

a(0) = 0, a(3n3*n) = a(n), a(3n3*n+1) = 3n3*n+1, a(3n3*n+2) = 3n3*n+2.

EXAMPLE

Also, Sum_{n >= 1} 1/a(n)*x^n = L(x) + (2/3)*L(x^3) + (2/3)*L(x^9) + (2/3)*L(x^27) + ... .

STATUS

proposed

editing