Number of subsets of {1, 2, ..., 4*n + 2} which do not contain two numbers whose difference is 4.
A197424
Number of subsets of {1, 2, ..., 4*n + 2} which do not contain two numbers whose difference is 4.
Terms
- a(0) =4a(1) =36a(2) =225a(3) =1600a(4) =10816a(5) =74529a(6) =509796a(7) =3496900a(8) =23961025a(9) =164249856a(10) =1125736704a(11) =7716041281a(12) =52886200900a(13) =362488284900
External references
- oeis: A197424