Numbers k that divide the k-th Apéry number (A005259).

Terms

a(0) =1a(1) =5a(2) =55a(3) =629a(4) =3439a(5) =8525a(6) =17629a(7) =74455a(8) =120275a(9) =176305a(10) =244915a(11) =250325a(12) =628975a(13) =817819a(14) =839135a(15) =910675a(16) =912865a(17) =936955a(18) =1118435a(19) =1147925a(20) =2344127a(21) =4434125a(22) =7795715a(23) =7888477a(24) =9276275a(25) =10205525