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A122668 d(n)_n where d() = A000005. 2

%I #15 Mar 04 2018 03:05:47

%S 1,2,2,3,2,4,2,4,3,4,2,6,2,4,4,5,2,6,2,6,4,4,2,8,3,4,4,6,2,8,2,6,4,4,

%T 4,9,2,4,4,8,2,8,2,6,6,4,2,48,3,6,4,6,2,8,4,8,4,4,2,62,2,4,6,7,4,8,2,

%U 6,4,8,2,74,2,4,6,6,4,8,2,80,5,4,2,86,4,4,4,8,2,92,4,6,4,4,4,98,2,6,6,9

%N d(n)_n where d() = A000005.

%C See A122618 for notation.

%H Antti Karttunen, <a href="/A122668/b122668.txt">Table of n, a(n) for n = 1..10000</a>

%e From _Antti Karttunen_, Aug 24 2017: (Start)

%e For n = 48, A000005(48) = 10, in decimal "10". This read in base-48 is 1*(48^1) + 0*(48^0) = 48, thus a(48) = 48, which is the first time this sequence differs from A000005.

%e For n = 60, A000005(60) = 12, in decimal "12". This read in sexagesimal base is 1*(60^1) + 2*(60^0), thus a(60) = 62. (End)

%o (PARI)

%o A122618(n, d=digits(n)) = d*vectorv(#d, i, n^(#d-i)); \\ _M. F. Hasler_, Apr 22 2015

%o A122668(n) = A122618(n,digits(numdiv(n))); \\ _Antti Karttunen_, Aug 24 2017

%Y Cf. A000005, A122618, A122667.

%K nonn,base

%O 1,2

%A _N. J. A. Sloane_, Sep 22 2006

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Last modified April 23 02:14 EDT 2024. Contains 371906 sequences. (Running on oeis4.)