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A339550 Numbers k such that A339549(k) = A339549(k+1). 2
1, 9, 85, 697, 1285, 2605, 4573, 5845, 6001, 6241, 6613, 7141, 7453, 8005, 10897, 12453, 13141, 15445, 19789, 20345, 21445, 21913, 22873, 25957, 36565, 36601, 39597, 44761, 46405, 53677, 56137, 56593, 61013, 63445, 70094, 72913, 76977, 80913, 82405, 87085, 87601 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Analogous to A338452 as A339549 is analogous to A093653.

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000

EXAMPLE

9 is a term since A339549(9) = A339549(10) = 4.

MATHEMATICA

f[n_] := Times @@ (DigitCount[#, 2, 1] & /@ Divisors[n]); Select[Range[10000], f[#] == f[# + 1] &]

CROSSREFS

Cf. A000120, A093653, A338452, A339549.

Sequence in context: A196434 A197197 A295118 * A228417 A015580 A163308

Adjacent sequences:  A339547 A339548 A339549 * A339551 A339552 A339553

KEYWORD

nonn,base

AUTHOR

Amiram Eldar, Dec 08 2020

STATUS

approved

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Last modified December 2 10:13 EST 2021. Contains 349437 sequences. (Running on oeis4.)