Least k such that A006577(k) = A006577(n) + A006577(n+1).

Terms

a(0) =2a(1) =6a(2) =12a(3) =3a(4) =34a(5) =49a(6) =9a(7) =72a(8) =98a(9) =18a(10) =25a(11) =28a(12) =33a(13) =39a(14) =36a(15) =7a(16) =57a(17) =406a(18) =65a(19) =11a(20) =72a(21) =86a(22) =98a(23) =114a(24) =114a(25) =129a(26) =913a(27) =153a(28) =153a(29) =171