The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A019516 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A019516

Delete all 2's, 3's, 5's and 7's from the sequence of nonnegative integers.
(history; published version)

#24 by OEIS Server at Thu Nov 21 16:40:53 EST 2024

LINKS

Robert Israel, <a href="/A019516/b019516_1.txt">Table of n, a(n) for n = 0..10000</a>

#23 by Alois P. Heinz at Thu Nov 21 16:40:53 EST 2024

STATUS

proposed

approved

Discussion

Thu Nov 21

16:40

OEIS Server: Installed first b-file as b019516.txt.

#22 by Robert Israel at Thu Nov 21 16:30:56 EST 2024

STATUS

editing

proposed

#21 by Robert Israel at Thu Nov 21 16:30:20 EST 2024

KEYWORD

base,nonn,changed,look

#20 by Robert Israel at Thu Nov 21 16:29:23 EST 2024

LINKS

Robert Israel, <a href="/A019516/b019516_1.txt">Table of n, a(n) for n = 0..10000</a>

MAPLE

f:= proc(n) local L, i;

L:= subs(2=NULL, 3=NULL, 5=NULL, 7=NULL, convert(n, base, 10));

if L = [] then NULL else add(L[i]*10^(i-1), i=1..nops(L)) fi

end proc:

map(f, [$0..100]); # Robert Israel, Nov 21 2024

STATUS

approved

editing

#19 by Joerg Arndt at Wed Mar 15 10:51:10 EDT 2023

STATUS

reviewed

approved

#18 by Andrew Howroyd at Wed Mar 15 10:43:46 EDT 2023

STATUS

proposed

reviewed

#17 by Michel Marcus at Wed Mar 15 09:45:55 EDT 2023

STATUS

editing

proposed

#16 by Michel Marcus at Wed Mar 15 09:45:50 EDT 2023

LINKS

Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/SmarandacheSequences.html">Smarandache Sequences</a>

EXTENSIONS

a(42) corrected and extended by _T. D. Noe, _, Oct 18 2011

STATUS

approved

editing

#15 by Wesley Ivan Hurt at Fri Apr 10 01:46:54 EDT 2020

STATUS

editing

approved