Exponents m such that the decimal expansion of 7^m exhibits its first zero from the right later than any previous exponent.

A239012

Exponents m such that the decimal expansion of 7^m exhibits its first zero from the right later than any previous exponent.

Terms

    a(0) =0a(1) =2a(2) =3a(3) =6a(4) =10a(5) =11a(6) =19a(7) =35a(8) =127a(9) =131a(10) =175a(11) =207a(12) =1235a(13) =2470a(14) =2651a(15) =1241310a(16) =1922910a(17) =471056338a(18) =1001431598a(19) =1720335627a(20) =4203146094a(21) =5353516238a(22) =21838571507a(23) =25770284079a(24) =40822793867

External references