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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
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 A305548
KEYWORD
nonn
AUTHOR
Robert G. Wilson v, Apr 14 2003
STATUS
approved

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Last modified July 20 18:43 EDT 2024. Contains 374459 sequences. (Running on oeis4.)