Andre Weil first used it in 1939 and got the idea from a letter in the Danish and Norwegian alphabet.

The Danish alphabet is similar to the English alphabet, with the addition of special characters such as æ, ø, and å. The Danish alphabet consists of 29 letters in total.

Danish and Norwegian. Anderson, with "son", is of Scottish and English origin. Andersen with "sen" is, like I wrote, Danish and Norwegian. As a pretty general rule, names that end in "sen", which means son of, are Scandinavian, and to a lesser extent North German or Dutch. Other names that end in "sen" are Jensen (Danish, Norwegian), Christensen (Norwegian), Hansen (Norwegian, Danish), Olsen (Norwegian), etc. Danish and Norwegian. Anderson, with "son", is of Scottish and English origin. Andersen with "sen" is, like I wrote, Danish and Norwegian. As a pretty general rule, names that end in "sen", which means son of, are Scandinavian, and to a lesser extent North German or Dutch. Other names that end in "sen" are Jensen (Danish, Norwegian), Christensen (Norwegian), Hansen (Norwegian, Danish), Olsen (Norwegian), etc.

Krone means "Crown" in both Danish and Norwegian.

No, the currency of Norway is the Norwegian krone.

The currency of Denmark is the Danish krone.