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A353363
Numbers k such that A046523(A332223(A332223(k))) is equal to A046523(A332223(k)).
2
1, 2, 6, 25, 38, 155, 235, 294, 322, 365, 390, 465, 528, 638, 646, 744, 765, 768, 867, 884, 924, 946, 1152, 1172, 1290, 1421, 1600, 1653, 1675, 1677, 1729, 1785, 1980, 1989, 2002, 2028
OFFSET
1,2
COMMENTS
Numbers k such that A332223(k) is in A353308.
If there existed any 3-perfect number (A005820) of the form x = 4u+2 and not divisible by 3, then x would be also included in A353365 and A005940(1+x) would be included in this sequence. See comments in A353365.
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Apr 17 2022
STATUS
approved