Recycled Numbers solutions

Recycled Numbers was solved using F# by 10 contestants.

672. download Typhon (S, L)
1597. download joelgrus (S, L)
4031. download rd1 (S, L)
4901. download modosansreves (S, L)
5598. download theburningmonk (S, L)
5655. download krontogiannis (S, L)
6630. download AaKoshh (S)
6851. download lightstar (S)
7869. download bakerBB (S, L)
12514. download higherorderfun (S)