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A349259
Numbers where A349258 reaches a record value.
2
1, 2, 6, 8, 24, 120, 128, 384, 1920, 3456, 17280, 32768, 98304, 491520, 884736, 4423680, 30965760, 71663616, 358318080, 2147483648, 6442450944, 32212254720, 57982058496, 289910292480, 2029372047360, 4696546738176, 23482733690880, 164379135836160, 587068342272000
OFFSET
1,2
COMMENTS
The corresponding record values are 0, 1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 15, 16, ... (see the link for more values).
EXAMPLE
The first 6 terms of A349258 are 0, 1, 1, 1, 1 and 2, The record values, 0, 1 and 2, occur at 1, 2 and 6, the first 3 terms of this sequence.
MATHEMATICA
f[p_, e_] := 2^DigitCount[e, 2, 1] - 1; c[1] = 0; c[n_] := Plus @@ f @@@ FactorInteger[n]; cm = -1; s = {}; Do[c1 = c[n]; If[c1 > cm, cm = c1; AppendTo[s, n]], {n, 1, 10^5}]; s
CROSSREFS
Cf. A349258.
Subsequence of A025487.
Sequence in context: A122758 A122756 A193946 * A349260 A189850 A189358
KEYWORD
nonn
AUTHOR
Amiram Eldar, Nov 12 2021
STATUS
approved