A355615 Define a rational sequence {b(n)} as b(1) = 1, b(n) = b(n-1) + 1/(n + 1 - b(n-1)) for n > 1; a(n) is the numerator of b(n).

1, 3, 19, 689, 902919, 1610893922869, 5422187846648306990942459, 65408471597507349805723190837012905483968615226329

Offset: 1

Author

Leonid Broukhis, Jul 09 2022

Keywords

• nonn
• frac

Comments

The next term is too large to include.

Examples

			The sequence {b(n)} begins 1, 3/2, 19/10, 689/310, 902919/363010, 1610893922869/594665194510, ...
		

Crossrefs

Cf. A079278 (denominators).