Numbers k such that string 3,2 occurs in the base 7 representation of k but not of k-1.

Terms

a(0) =23a(1) =72a(2) =121a(3) =161a(4) =170a(5) =219a(6) =268a(7) =317a(8) =366a(9) =415a(10) =464a(11) =504a(12) =513a(13) =562a(14) =611a(15) =660a(16) =709a(17) =758a(18) =807a(19) =847a(20) =856a(21) =905a(22) =954a(23) =1003a(24) =1052a(25) =1101a(26) =1127a(27) =1190a(28) =1199a(29) =1248