A343214 Number of compositions (ordered partitions) of 1/n into n reciprocals of positive integers.

1, 3, 106, 15259, 13879541, 95073863568

Offset: 1

Author

Ilya Gutkovskiy, Apr 08 2021

Keywords

• nonn
• hard
• more

Examples

			a(2) = 3 because we have 1/2 = 1/4 + 1/4 = 1/3 + 1/6 = 1/6 + 1/3.
		

Crossrefs

Cf. A002967, A048691, A342267, A343074.

Extensions

a(5)-a(6) from Max Alekseyev, Jan 24 2024