A337361 Number of elements of size n in the Ulam set in the canonical free group on two starting members, U({0,1}), generated by the two initial members.

0, 2, 2, 4, 8, 12, 26, 36, 98, 124, 274, 512, 1018, 1916, 3812, 7772, 14822, 29368, 58478, 114300, 225166, 441724, 876238, 1717748, 3406884

Offset: 0

Author

Deyuan Li, Aug 24 2020

Keywords

• nonn
• word
• more

Links

• Tej Bade, Kelly Cui, Antoine Labelle, and Deyuan Li, Ulam sets in new settings, arXiv:2008.02762 [math.CO], 2020. See also Integers (2020) Vol. 20, #A102.

Crossrefs

Cf. A336528.