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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A363839 Numbers in the witch's multiplication table (German: "Hexeneinmaleins") in Goethe's Faust.

Original entry on oeis.org

1, 10, 2, 3, 4, 5, 6, 7, 8, 9, 1, 10, 0, 1
Offset: 1

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Author

Georg Fischer, Jun 23 2023

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In German, the witch declaims the following magic spell to Faust:
Du mußt verstehn!
Aus Eins[1] mach' Zehn[10],
Und Zwey[2] laß gehn,
Und Drey[3] mach' gleich,
So bist du reich.
Verlier' die Vier[4]!
Aus Fünf[5] und Sechs[6],
So sagt die Hex',
Mach' Sieben[7] und Acht[8],
So ist's vollbracht:
Und Neun[9] ist Eins[1],
Und Zehn[10] ist keins[0].
Das ist das Hexen-Einmal-Eins[1]!
(The numbers in "[...]" do not apppear in the original.)
Literal translation into English:
You must understand!
From one make ten,
And two let go,
And three make equal,
So you are rich.
Lose the four!
From five and six,
So says the witch,
Make seven and eight,
So it is finished:
And nine is one,
And ten is none.
This is the Witch's one-times-one!
.
From Peter Luschny, Jun 23 2023: (Start)
Sometimes the witch's one-times-one is interpreted as a construction guide for a magic square, which describes a transformation like this:
1 2 3 4 9 2
4 5 6 -> 3 5 7
7 8 9 8 1 6
(End)

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