Irregular triangle read by rows in which row n lists the prime factors of the duodecimal repunit ((12^n-1)/11). (Written in base 10).
A250210
Irregular triangle read by rows in which row n lists the prime factors of the duodecimal repunit ((12^n-1)/11). (Written in base 10).
Terms
- a(0) =13a(1) =157a(2) =5a(3) =13a(4) =29a(5) =22621a(6) =7a(7) =13a(8) =19a(9) =157a(10) =659a(11) =4943a(12) =5a(13) =13a(14) =29a(15) =89a(16) =233a(17) =37a(18) =157a(19) =80749a(20) =13a(21) =19141a(22) =22621a(23) =11a(24) =23a(25) =266981089a(26) =5a(27) =7a(28) =13a(29) =19
External references
- oeis: A250210