A276334 - OEIS

%I #9 Aug 31 2016 20:56:10

%S 0,1,2,3,4,4,4,4,8,8,8,8,12,12,12,12,16,16,18,18,18,18,18,18,18,18,18,

%T 18,18,18,18,18,18,18,18,18,36,36,36,36,36,36,36,36,36,36,36,36,36,36,

%U 36,36,36,36,54,54,54,54,54,54,54,54,54,54,54,54,54,54,54,54,54,54,72,72,72,72,72,72,72,72

%N a(n) = A258199(n) * A276333(n).

%C a(n) is obtained by first replacing with zeros all other digits except the leftmost (the most significant) in the greedy A001563-base representation of n (A276326), then converting back to decimal. Used to compute A276335.

%H Antti Karttunen, <a href="/A276334/b276334.txt">Table of n, a(n) for n = 0..4320</a>

%F a(n) = A258199(n) * A276333(n).

%F A276335(n) = n - a(n).

%t Table[# Floor[n/#] &@ (# #!) &@ NestWhile[# + 1 &, 0, # #! <= n &[# + 1] &], {n, 84}] (* _Michael De Vlieger_, Aug 31 2016 *)

%o (Scheme) (define (A276334 n) (* (A258199 n) (A276333 n)))

%Y Cf. A001563, A258199, A276332, A276333, A276335.

%K nonn,base

%O 0,3

%A _Antti Karttunen_, Aug 30 2016