login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual appeal: Please make a donation to keep the OEIS running! Over 6000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A082915 Numbers n for which the first difference sequence of A054040 decreases. 1
27, 53, 179, 305, 431, 557, 683, 809, 835, 935, 961, 1087, 1213, 1339, 1465, 1591, 1717, 1743, 1843, 1869, 1995, 2121, 2247, 2373, 2499, 2525, 2625, 2651, 2777, 2903, 3029, 3155, 3281, 3407, 3433, 3533, 3559, 3685, 3811, 3937, 4063, 4189, 4215, 4315 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Same as asking when the second difference of A054040 is -1.

LINKS

Table of n, a(n) for n=1..44.

EXAMPLE

A054040(27)-A054040(26) = 13 while A054040(26)-A054040(25) = 14, therefore the first entry is 27.

MATHEMATICA

k = s = a = b = c = 0; Do[m = n; While[s < n, k++; s = N[s + 1/Sqrt[k], 50]]; a = b; b = c; c = k; If[2b - a > c, Print[n]], {n, 1, 4400}]

CROSSREFS

Cf. A054040.

Sequence in context: A160845 A216224 A255364 * A183032 A040702 A043323

Adjacent sequences:  A082912 A082913 A082914 * A082916 A082917 A082918

KEYWORD

nonn

AUTHOR

Robert G. Wilson v, Apr 14 2003

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified November 18 12:21 EST 2017. Contains 294891 sequences.