A378599 Numbers whose divisors can be partitioned into two disjoint sets with the same sum in an odd number of ways.

6, 12, 20, 24, 28, 30, 48, 56, 60, 70, 80, 88, 90, 96, 104, 140, 156, 168, 176, 180, 192, 208, 210, 216, 224, 234, 252, 270, 272, 280, 300, 304, 312, 320, 336, 350, 352, 360, 368, 384, 396, 408, 420, 432, 448, 464, 468, 476, 480, 496, 504, 532, 550, 552, 560, 612, 630, 644, 650, 696, 700, 720, 728, 736, 760, 768

Offset: 1

Author

Antti Karttunen, Dec 03 2024

Keywords

• nonn

Comments

{k such that A083206(k) is odd}.

Links

• Antti Karttunen, Table of n, a(n) for n = 1..13313

Crossrefs

Cf. A083206, A083209 (subsequence), A378598 (characteristic function).

Subsequence of A083207, Zumkeller numbers.

Programs

PARI

is_A378599 = A378598;