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A206480 (Number of permutations of {1,2,...,n} for which sums of five consecutive numbers (with wraparound) are all distinct)/2n 0

%I #5 Mar 31 2012 10:33:06

%S 60,46,690,2529,67636,184014,2374017,19353643

%N (Number of permutations of {1,2,...,n} for which sums of five consecutive numbers (with wraparound) are all distinct)/2n

%C Essentially different ways 1,2,3,...n can be placed around a circle so that sums of five consecutive numbers are distinct.

%e Some examples of such permutations are: 12568374; 13756824; and 16253847

%Y Cf. A040018

%K nonn

%O 6,1

%A _Steve Butler_, Feb 08 2012

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Last modified April 23 20:33 EDT 2024. Contains 371916 sequences. (Running on oeis4.)