Number of natural disjoint covering systems of cardinality n, with gcd of the moduli equal to 2.
A294593
Number of natural disjoint covering systems of cardinality n, with gcd of the moduli equal to 2.
Terms
- a(0) =0a(1) =1a(2) =2a(3) =6a(4) =22a(5) =88a(6) =372a(7) =1636a(8) =7406a(9) =34276a(10) =161436a(11) =771238a(12) =3728168a(13) =18201830a(14) =89622696a(15) =444533010a(16) =2219057382a(17) =11139859864a(18) =56203325212a(19) =284828848740
External references
- oeis: A294593