Problem 44321. Van Eck's Sequence's nth member

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Return the Van Eck's Sequence's nth member.

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 seq = 0, 0, 1, 0, 2, 0, 2, 2, 1, 6, 0, 5...

First member is 0;

Second member is 0;

third member is 1 etc

Solve

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Last solution submitted on Jul 12, 2019

Last 200 Solutions

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1 Comment

Huajie Zheng on 23 Oct 2018

interesting

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Solution 1427667

1 Comment

1 Comment

Simone Sabbatini on 29 Jan 2018

I don't understand why in my Matlab software it works for all the x while here it falis for x>=11

function result = VanEcksSequence(n)
A=0;
for i=1:n
if i==1
A(i+1)=0;
else
[C Chigh]=ismember(A(i),A(1:i-1));
if not(Chigh==0)
A(i+1)=i-Chigh;
else
A(i+1) = 0;
end
end
end
result = A(n);
end

Problem 44321. Van Eck's Sequence's nth member

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Problem 44321. Van Eck's Sequence's nth member

Solution Stats

Last 200 Solutions

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Recent Solvers252

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