A325812 - OEIS

A325812

Numbers k such that gcd(A034448(k)-k, k-A048146(k)) is equal to abs(k-A048146(k)).

1, 6, 12, 28, 56, 60, 108, 120, 132, 168, 264, 280, 312, 408, 420, 440, 456, 496, 528, 540, 552, 696, 700, 728, 744, 756, 760, 888, 984, 992, 1032, 1128, 1140, 1188, 1272, 1404, 1416, 1456, 1464, 1608, 1704, 1710, 1752, 1836, 1896, 1992, 2052, 2136, 2328, 2424, 2472, 2484, 2568, 2616, 2646, 2712, 3048, 3132, 3144, 3288, 3336, 3344

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OFFSET

1,2

COMMENTS

Numbers k for which A325813(k) is equal to abs(A325814(k)).

Numbers k such that A325814(k) is not zero (not in A064591) and divides A034460(k).

Conjecture: after the initial one all other terms are even. If this holds then there are no odd perfect numbers.

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..25000

Index entries for sequences where any odd perfect numbers must occur

PROG

(PARI)