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.
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.
Terms
- a(0) =0a(1) =2a(2) =2a(3) =4a(4) =8a(5) =12a(6) =26a(7) =36a(8) =98a(9) =124a(10) =274a(11) =512a(12) =1018a(13) =1916a(14) =3812a(15) =7772a(16) =14822a(17) =29368a(18) =58478a(19) =114300a(20) =225166a(21) =441724a(22) =876238a(23) =1717748a(24) =3406884
External references
- oeis: A337361