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A348448
Records in A307730.
2
1, 2, 3, 6, 9, 12, 15, 21, 24, 27, 36, 45, 49, 56, 63, 72, 81, 90, 99, 110, 121, 132, 143, 150, 165, 176, 187, 190, 209, 220, 231, 243, 253, 264, 275, 290, 319, 324, 351, 360, 375, 377, 406, 435, 459, 475, 476, 493, 522, 551, 567, 575, 588, 609, 638, 667, 675, 700, 725, 754, 783, 810, 837, 858
OFFSET
1,2
COMMENTS
The points with coordinates (x,y) = (A348449(n), A348448(n)), n = 1,2,3,... are the upper envelope of the graph of A307730. Based on the first 10^6 terms of A307730 we get 110 points on the upper envelope, which appear to lie very roughly on the curve y = x^0.57. It would be nice to have a more trustworthy expression for this curve!
LINKS
Rémy Sigrist, Table of n, a(n) for n = 1..10000 (first 110 terms from N. J. A. Sloane)
Rémy Sigrist, C program for A348448
PROG
(C) // See Links section.
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Oct 23 2021
STATUS
approved