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A286612 Numbers n for which A019565(n) <= A087207(n) < n. 4
65, 513, 1026, 4107, 8200, 8256, 16400, 16450, 16512, 16544, 16641, 32800, 32900, 33024, 33282, 33920, 49184, 65600, 65800, 66048, 66080, 131200, 131334, 132096, 132160, 163968, 262400, 262668, 264192, 264320, 274432, 327936, 524342, 524610, 524800, 524832, 525826, 528384, 532500, 540736, 548864, 655872, 786467, 1048617 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Any 2-cycle of A087207 and also any 2-cycle of A019565 (in which case A019565(x) = A087207(x) for both members of the cycle), if such cycles exist at all, must have the larger one of its members included in this sequence.
LINKS
PROG
(Scheme, with Antti Karttunen's IntSeq-library)
(define A286612 (MATCHING-POS 1 1 (lambda (n) (and (< (A087207 n) n) (<= (A019565 n) (A087207 n))))))
CROSSREFS
Intersection of A286608 and A286611.
Subsequence of A285315.
Sequence in context: A251158 A251151 A222588 * A276963 A338413 A211404
KEYWORD
nonn,base
AUTHOR
Antti Karttunen, Jun 20 2017
STATUS
approved

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Last modified May 22 14:54 EDT 2024. Contains 372755 sequences. (Running on oeis4.)