A384185 Integers in A375491 in order of their first appearance.

1, 2, 4, 6, 12, 5, 8, 24, 3, 7, 18, 16, 30, 36, 48, 10, 32, 14, 72, 9, 60, 96, 120, 19, 64, 13, 40, 144, 21, 35, 56, 38, 28, 90, 26, 240, 15, 192, 384, 44, 76, 360, 88, 80, 180, 168, 114, 54, 288, 112, 264, 25, 41, 33, 256, 98, 20, 55, 312, 128

Offset: 1

Author

Robin Jones, May 21 2025

Keywords

• nonn

Comments

Does every positive integer appear in this sequence?

Examples

			a(1)=1 since the first squarefree integer (1) has 1 group of that order.
a(2)=2 since the first squarefree integer not to have a(1)=1 group of its order (6) has 2 groups of its order.
a(3)=4 since the first squarefree integer not to have a(1)=1 or a(2)=2 groups of its order (30) has 4 groups of its order.
		

Crossrefs

Cf. A375491.