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

Terms

a(0) =41a(1) =105a(2) =169a(3) =233a(4) =297a(5) =335a(6) =361a(7) =425a(8) =489a(9) =553a(10) =617a(11) =681a(12) =745a(13) =809a(14) =847a(15) =873a(16) =937a(17) =1001a(18) =1065a(19) =1129a(20) =1193a(21) =1257a(22) =1321a(23) =1359a(24) =1385a(25) =1449a(26) =1513a(27) =1577a(28) =1641a(29) =1705