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A018246 A self-generating sequence: there are a(n) (k+1)'s between successive k's, where k=5. 0

%I

%S 5,6,6,6,6,6,5,6,6,6,6,6,6,5,6,6,6,6,6,6,5,6,6,6,6,6,6,5,6,6,6,6,6,6,

%T 5,6,6,6,6,6,6,5,6,6,6,6,6,5,6,6,6,6,6,6,5,6,6,6,6,6,6,5,6,6,6,6,6,6,

%U 5,6,6,6,6,6,6,5,6,6,6,6

%N A self-generating sequence: there are a(n) (k+1)'s between successive k's, where k=5.

%p f := proc(n,k) floor(n*(k+sqrt(k^2+4*k))/2)-floor((n-1)*(k+sqrt(k^2+4*k))/2); end; (with k=5)

%Y Cf. A001468, A007538.

%K nonn

%O 1,1

%A _Jonas Wallgren_

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Last modified August 12 17:17 EDT 2020. Contains 336439 sequences. (Running on oeis4.)