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A376857
Fixed points of A162742.
2
1, 3, 5, 7, 9, 15, 17, 21, 25, 27, 31, 35, 45, 49, 51, 63, 73, 75, 81, 85, 93, 105, 107, 119, 125, 127, 135, 143, 147, 153, 155, 175, 189, 217, 219, 225, 243, 245, 255, 257, 279, 289, 313, 315, 321, 343, 357, 365, 375, 381, 405, 425, 429, 441, 443, 459, 465, 511, 525, 527, 535
OFFSET
1,2
COMMENTS
First differs from A342572 at n = 28. In the present sequence a(28) = 143 = 11 * 13: 11 and 13 are the binary reversals of each other but neither is a binary palindrome, so 143 is not in A342572.
MATHEMATICA
A376857Q[k_] := k == Times @@ (IntegerReverse[#1, 2]^#2 & @@@ FactorInteger[k]);
Select[Range[1000], A376857Q]
PROG
(Python) # uses function, imports in A162742
def ok(n): return n > 0 and n == A162742(n)
print([k for k in range(536) if ok(k)]) # Michael S. Branicky, Oct 07 2024
CROSSREFS
Cf. A162742. Supersequence of A342572.
Sequence in context: A258159 A238257 A305409 * A342572 A374199 A359402
KEYWORD
nonn,base
AUTHOR
Paolo Xausa, Oct 07 2024
STATUS
approved