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A348251 Numbers that take more than the minimum number of steps to appear in A307730. 2
6, 12, 14, 15, 21, 24, 26, 36, 38, 39, 45, 56, 57, 58, 63, 65, 72, 74, 78, 85, 86, 87, 90, 91, 99, 106, 110, 111, 115, 119, 122, 126, 129, 132, 135, 138, 142, 143, 145, 150, 158, 159, 161, 165, 171, 174, 175, 176, 178, 183, 185, 187, 190, 202, 203, 209, 213, 214, 215, 216, 220, 222, 226, 230, 231 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
The total number of appearances of a number n in A307730 is required to be n. For the numbers listed here, those appearances are spread out over more than n terms of A307730.
These are the numbers n for which A348250(n) is nonzero.
It would be nice to have an independent characterization of these numbers. It is a theorem that no primes can appear, but what more can be said? The graph is roughly linear, and the first differences are small but irregular.
LINKS
CROSSREFS
Sequence in context: A360551 A306999 A246048 * A290648 A336549 A136155
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Oct 21 2021
STATUS
approved

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Last modified February 21 09:29 EST 2024. Contains 370228 sequences. (Running on oeis4.)