Least composite number not congruent to 0 (modulo the first n primes) which contains its greatest proper divisor as a substring of itself, both in base two.
A077658
Least composite number not congruent to 0 (modulo the first n primes) which contains its greatest proper divisor as a substring of itself, both in base two.
Terms
- a(0) =4a(1) =55a(2) =55a(3) =91a(4) =407a(5) =493a(6) =493a(7) =893a(8) =1189a(9) =1189a(10) =1643a(11) =1681a(12) =1681a(13) =7597a(14) =7597a(15) =7597a(16) =7597a(17) =7597a(18) =7597a(19) =7597a(20) =7979a(21) =7979a(22) =9167a(23) =9167a(24) =11227a(25) =11227a(26) =11227a(27) =28757a(28) =28757a(29) =28757
External references
- oeis: A077658