Numbers k such that string 5,5 occurs in the base 8 representation of k but not of k-1.

Terms

a(0) =45a(1) =109a(2) =173a(3) =237a(4) =301a(5) =360a(6) =429a(7) =493a(8) =557a(9) =621a(10) =685a(11) =749a(12) =813a(13) =872a(14) =941a(15) =1005a(16) =1069a(17) =1133a(18) =1197a(19) =1261a(20) =1325a(21) =1384a(22) =1453a(23) =1517a(24) =1581a(25) =1645a(26) =1709a(27) =1773a(28) =1837a(29) =1896