a(n) is the least positive k such that A000041(n) divides A000041(n+k), or 0 if no such k exists.

Terms

a(0) =1a(1) =1a(2) =6a(3) =4a(4) =3a(5) =5a(6) =2a(7) =2a(8) =7a(9) =88a(10) =16a(11) =64a(12) =4a(13) =343a(14) =25a(15) =81a(16) =23a(17) =22a(18) =21a(19) =245a(20) =450a(21) =755a(22) =75a(23) =688a(24) =225a(25) =740a(26) =4432a(27) =307a(28) =671a(29) =1055