A027918 Least k such that 1+2+...+k >= E{1,2,...,n}, where E is the 4th elementary symmetric function.

7, 23, 57, 116, 212, 356, 562, 845, 1224, 1717, 2345, 3130, 4097, 5272, 6682, 8357, 10327, 12627, 15290, 18353, 21855, 25834, 30332, 35393, 41062, 47385, 54412, 62191, 70776

Offset

4,1

Links

Table of n, a(n) for n=4..32.

Formula

a(n) = min{k: A000217(k) >= A000915(n-3)}. - R. J. Mathar, Sep 23 2016

Crossrefs

Sequence in context: A172252 A027116 A151718 * A058195 A213770 A235683

Adjacent sequences: A027915 A027916 A027917 * A027919 A027920 A027921

Keyword

nonn

Author

Clark Kimberling

Status

approved