Number of different energy states of n positive and n negative charges on a string.
A045610
Number of different energy states of n positive and n negative charges on a string.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =7a(4) =22a(5) =70a(6) =249a(7) =880a(8) =3238a(9) =12180a(10) =46247a(11) =174458a(12) =672920a(13) =2585414a(14) =10015955
External references
- oeis: A045610