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A264668 a(n) = A264600(n) - A061486(n). 3

%I #9 Nov 22 2015 16:06:33

%S 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,

%T 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,

%U 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,9,18,27,36,45,54,63,72,81,0,8,16,24,32,40,48,56,64,72,0,7,14,21,28,35,42,49,56,63

%N a(n) = A264600(n) - A061486(n).

%H Alois P. Heinz, <a href="/A264668/b264668.txt">Table of n, a(n) for n = 0..20000</a>

%p with(combinat):

%p f:= n-> (l-> add(mul(l[i], i=w), w=choose(

%p nops(l)))-1)(convert(n, base, 10)):

%p g:= proc(n) option remember; `if`(n=0, 0,

%p irem(n, 10, 'r')*(r+1)+g(r))

%p end:

%p a:= n-> g(n)-f(n):

%p seq(a(n), n=0..150);

%Y Cf. A061486, A264600.

%K nonn,look,base

%O 0,102

%A _Alois P. Heinz_, Nov 20 2015

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Last modified September 17 19:55 EDT 2024. Contains 375990 sequences. (Running on oeis4.)