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A031287 Position of n-th 0 in A007376. 12

%I

%S 0,11,31,51,71,91,111,131,151,171,191,192,194,197,200,203,206,209,212,

%T 215,218,222,252,282,312,342,372,402,432,462,491,492,494,497,500,503,

%U 506,509,512,515,518,522,552,582,612,642,672,702

%N Position of n-th 0 in A007376.

%C A007376(a(n)) = 0;

%C a(n) = Max{A031287(n), A031288(n), A031289(n), A031290(n), A031291(n), A031292(n), A031293(n), A031294(n), A031295(n), A031296(n)}. [_Reinhard Zumkeller_, Jul 28 2011]

%H Reinhard Zumkeller, <a href="/A031287/b031287.txt">Table of n, a(n) for n = 1..10001</a> [a(1)=0 inserted by _Georg Fischer_, Apr 28 2020]

%o (Haskell)

%o import Data.List (elemIndices)

%o a031287 n = a031287_list !! (n-1)

%o a031287_list = map (+ 1) $ elemIndices 0 a007376_list

%o -- _Reinhard Zumkeller_, Jul 28 2011

%Y Cf. A193428.

%K nonn,less,base,look

%O 1,2

%A _Clark Kimberling_

%E a(1)=0 inserted for consistency with change in A007376 by _Sean A. Irvine_, Apr 21 2020

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Last modified August 7 08:08 EDT 2020. Contains 336274 sequences. (Running on oeis4.)