Challenge #463: Let Designer Calculate the Pell Number Sequence!

[AaronSmatta]

Fun problem

[mgaronson]

スポイラ

 Generate rows and multi-row formula are key to solve.

[Kilbyflow_Designer]

Spoiler Nice Job!!

[betterbelieve]

Why do i get an error message "Unknown variance "Row-2:Pell_Sequence". Only for the Row-2 portion of the expression. Thank you.

[trizi]

Thank you!

スポイラ

[myastarling]

This was a fun challenge! Here's my solution.

I just realized a mistake in my solution (I didn't treat num as a separate field) so I'm reposting now with two solutions, one including the original input, one excluding the original input altogether

[ntakeda]

スポイラ

[FilipR]

Solved.

[westlakecjw]

スポイラ

Thanks @Bobbyt23 for taking us through this one!

[Deborah_Simmonds]

2nd great JLL EMEA session by @Bobbyt23 today, with even more useful tips that I'd missed!