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A260723 First differences of Ludic numbers: a(n) = A003309(n+1) - A003309(n). 8

%I #7 Aug 10 2015 07:28:20

%S 1,1,2,2,4,2,4,6,2,4,8,4,2,4,6,8,6,4,6,6,6,2,6,10,8,4,2,6,4,12,6,8,4,

%T 12,2,4,2,12,16,2,10,2,4,6,2,4,8,10,8,12,6,4,14,6,6,16,2,6,4,12,6,2,

%U 16,6,6,8,10,8,4,2,10,2,4,8,18,4,8,6,12,4,6,6,8,10,8,6,12,12,12,4,12,2,12,6,4,8,18,4,6,6,8,6,12,6,6,6,4,20,6

%N First differences of Ludic numbers: a(n) = A003309(n+1) - A003309(n).

%H Antti Karttunen, <a href="/A260723/b260723.txt">Table of n, a(n) for n = 1..10000</a>

%H <a href="/index/Si#sieve">Index entries for sequences generated by sieves</a>

%F a(n) = A003309(n+1) - A003309(n).

%o (Scheme) (define (A260723 n) (- (A003309 (+ n 1)) (A003309 n)))

%Y Cf. A003309.

%Y Cf. also A001223, A031883, A260722.

%K nonn

%O 1,3

%A _Antti Karttunen_, Aug 06 2015

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Last modified August 24 02:14 EDT 2024. Contains 375396 sequences. (Running on oeis4.)