a(n) = greatest number of numbers between consecutive appearances of n in A026409.

Terms

a(0) =1a(1) =2a(2) =4a(3) =4a(4) =6a(5) =7a(6) =9a(7) =9a(8) =11a(9) =13a(10) =13a(11) =16a(12) =15a(13) =15a(14) =19a(15) =19a(16) =19a(17) =25a(18) =21a(19) =22a(20) =27a(21) =32a(22) =32a(23) =29a(24) =34a(25) =32a(26) =31a(27) =41a(28) =37a(29) =36