Least number m such that 11^m == +- 1 (mod 11n + 1).

Terms

a(0) =1a(1) =11a(2) =8a(3) =6a(4) =6a(5) =33a(6) =12a(7) =11a(8) =10a(9) =3a(10) =2a(11) =3a(12) =12a(13) =30a(14) =41a(15) =29a(16) =23a(17) =11a(18) =6a(19) =48a(20) =28a(21) =81a(22) =63a(23) =26a(24) =11a(25) =120a(26) =74a(27) =51a(28) =16a(29) =165