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A080465 Absolute difference between the two numbers formed by alternate digits of n. 6

%I #21 Nov 10 2019 01:32:10

%S 1,0,1,2,3,4,5,6,7,8,2,1,0,1,2,3,4,5,6,7,3,2,1,0,1,2,3,4,5,6,4,3,2,1,

%T 0,1,2,3,4,5,5,4,3,2,1,0,1,2,3,4,6,5,4,3,2,1,0,1,2,3,7,6,5,4,3,2,1,0,

%U 1,2,8,7,6,5,4,3,2,1,0,1,9,8,7,6,5,4,3,2,1,0,10,11,12,13,14,15,16,17,18,19,9

%N Absolute difference between the two numbers formed by alternate digits of n.

%C Differs from A040115 first at a(110) = 9. - _R. J. Mathar_, Sep 19 2008

%H T. D. Noe, <a href="/A080465/b080465.txt">Table of n, a(n) for n=10..10000</a>

%e a(132546) = |124 - 356| = 232.

%o (PARI) A080465(n)=abs(vector(#n=digits(n),j,(-1)^j*10^((#n-j)\2))*n~) \\ _M. F. Hasler_, Jan 10 2016

%Y Cf. A080463, A080464, A267086.

%Y See also A040997.

%K base,easy,nonn,look

%O 10,4

%A _Amarnath Murthy_, Mar 02 2003

%E More terms from _Ray Chandler_, Oct 11 2003

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)