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A349283
Numbers k such that A051378(k) = A051378(k+1).
1
14, 206, 957, 1334, 1364, 1485, 1634, 2685, 2974, 4136, 4364, 14841, 20145, 24957, 33998, 36566, 42818, 61183, 64672, 74918, 79826, 79833, 84134, 86343, 92685, 104192, 109864, 111506, 122073, 138237, 147454, 159711, 162602, 166934, 187863, 190773, 193893, 201597
OFFSET
1,1
COMMENTS
First differs from A333949 at n = 18.
LINKS
EXAMPLE
14 is a term since A051378(14) = A051378(15) = 24.
MATHEMATICA
s[1] = 1; s[n_] := Times @@ (1 + Sum[First[#]^d, {d, Divisors[Last[#]]}] &) /@ FactorInteger[n]; Select[Range[2*10^5], s[#] == s[#+1] &]
CROSSREFS
Cf. A051378.
Similar sequences: A002961, A064115, A064125, A293183, A306985, A333949.
Sequence in context: A068769 A113349 A109764 * A333949 A002961 A063071
KEYWORD
nonn
AUTHOR
Amiram Eldar, Nov 13 2021
STATUS
approved