This site is supported by donations to The OEIS Foundation.

 Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing. Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A027918 Least k such that 1+2+...+k >= E{1,2,...,n}, where E is the 4th elementary symmetric function. 0
 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 (list; graph; refs; listen; history; text; internal format)
 OFFSET 4,1 LINKS 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 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 14 19:27 EST 2019. Contains 329987 sequences. (Running on oeis4.)