a(n) is the smallest positive multiple of 2n-1 that contains the binary representation of n in its binary representation and that is a palindrome when written in binary.

A158789

a(n) is the smallest positive multiple of 2n-1 that contains the binary representation of n in its binary representation and that is a palindrome when written in binary.

Terms

    a(0) =1a(1) =9a(2) =15a(3) =231a(4) =27a(5) =99a(6) =455a(7) =195a(8) =51a(9) =2565a(10) =189a(11) =2553a(12) =1675a(13) =189a(14) =7163a(15) =15903a(16) =99a(17) =5285a(18) =2553a(19) =10725a(20) =21525a(21) =3483a(22) =495a(23) =17249a(24) =6419a(25) =2805a(26) =30263a(27) =10725a(28) =30039a(29) =6077

External references