Smallest k such that 40^k mod k = n.

Terms

a(0) =1a(1) =3a(2) =19a(3) =37a(4) =6a(5) =7a(6) =17a(7) =11a(8) =92a(9) =31a(10) =15a(11) =29a(12) =794a(13) =21a(14) =26a(15) =215a(16) =22a(17) =23a(18) =98a(19) =49a(20) =124a(21) =19849a(22) =42a(24) =284a(25) =75a(26) =1574a(27) =221a(28) =36a(29) =323a(30) =70