A055951 - OEIS

%I #12 Aug 08 2024 06:38:58

%S 0,0,0,0,0,4,0,-4,-8,-12,8,4,0,-4,-8,12,8,4,0,-4,16,12,8,4,0,24,0,-24,

%T -48,-72,24,0,-24,-48,-72,24,0,-24,-48,-72,24,0,-24,-48,-72,24,0,-24,

%U -48,-72,48,24,0,-24,-48,48,24,0,-24,-48,48,24,0,-24,-48,48,24,0,-24,-48,48,24,0,-24,-48,72,48,24,0,-24,72,48,24,0

%N n - reversal of base 5 digits of n (written in base 10).

%C a(n) is a multiple of 4.

%H Paolo Xausa, <a href="/A055951/b055951.txt">Table of n, a(n) for n = 0..10000</a>

%F a(n) = n - A030104(n).

%t Table[n - IntegerReverse[n, 5], {n, 0, 100}] (* _Paolo Xausa_, Aug 08 2024 *)

%Y Cf. A030104, A056965.

%K base,sign

%O 0,6

%A _Henry Bottomley_, Jul 18 2000