A018246 - OEIS

A018246

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

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, 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, 5, 6, 6, 6, 6, 6, 6, 5, 6, 6, 6, 6

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..80.

MAPLE

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)

CROSSREFS

Cf. A001468, A007538.

Sequence in context: A064864 A004553 A074826 * A101101 A046786 A035591

Adjacent sequences: A018243 A018244 A018245 * A018247 A018248 A018249

KEYWORD

nonn

AUTHOR

Jonas Wallgren

STATUS

approved