First differences of A063990 (amicable numbers arranged in increasing order).

Terms

a(0) =64a(1) =900a(2) =26a(3) =1410a(4) =304a(5) =2096a(6) =544a(7) =668a(8) =136a(9) =4376a(10) =112a(11) =1429a(12) =2310a(13) =2701a(14) =1120a(15) =44604a(16) =3908a(17) =64a(18) =103a(19) =2520a(20) =1530a(21) =4939a(22) =3666a(23) =7883a(24) =1097a(25) =11755a(26) =21780a(27) =103a(28) =784a(29) =1003