Pisano periods (or Pisano numbers): period of Fibonacci numbers mod n.

Terms

a(0) =1a(1) =3a(2) =8a(3) =6a(4) =20a(5) =24a(6) =16a(7) =12a(8) =24a(9) =60a(10) =10a(11) =24a(12) =28a(13) =48a(14) =40a(15) =24a(16) =36a(17) =24a(18) =18a(19) =60a(20) =16a(21) =30a(22) =48a(23) =24a(24) =100a(25) =84a(26) =72a(27) =48a(28) =14a(29) =120