A308563 Langton's ant on a three-dimensional grid: iterations where the ant passes through the origin.

0, 4, 8, 18, 130, 2206, 4326, 4650, 16344, 16814, 47942, 48000, 49928

Offset: 1

Author

Felix Fröhlich and Charlie Neder, Jun 07 2019

Keywords

• nonn
• fini
• full

Comments

For the rules applying to this ant, see A325953.

The sequence is finite, with 49928 being the last term. The ant never reaches the origin again after that, since it starts building a highway pattern at iteration 93475.

Links

• Charlie Neder, Python program for generating this sequence

Crossrefs

Cf. A102358, A325953, A325954, A325955.