Irregular triangle read by rows: T(n,k) for k <= n/2 is the number of partitions of the repunit A002275(n) into k nonzero complementary binary vectors having a common divisor > 1 in base 10.
A378761
Irregular triangle read by rows: T(n,k) for k <= n/2 is the number of partitions of the repunit A002275(n) into k nonzero complementary binary vectors having a common divisor > 1 in base 10.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =1a(5) =0a(6) =1a(7) =19a(8) =6a(9) =1a(10) =0a(11) =0a(12) =1a(13) =47a(14) =98a(15) =29a(16) =1a(17) =84a(18) =280a(19) =0a(20) =1a(21) =141a(22) =650a(23) =600a(24) =120a(25) =1a(26) =0a(27) =0a(28) =0a(29) =0
External references
- oeis: A378761