Smallest antipalindromic natural number k such that k*A351172(n) is also antipalindromic.

Terms

a(0) =2a(1) =2a(2) =2a(3) =10a(4) =10a(5) =52a(6) =2a(7) =12a(8) =2a(9) =10a(10) =2a(11) =2a(12) =42a(13) =883732a(14) =178a(15) =52a(16) =38a(17) =986352a(18) =56a(19) =3784a(20) =42a(21) =52a(22) =2a(23) =56a(24) =738a(25) =2a(26) =12a(27) =666a(29) =178a(30) =2