A045612 Number of different energy states between two stacked necklaces, each of n positive and n negative charges.

1, 2, 5, 18, 71, 538, 2619, 33052, 233613, 3153926, 24581647

Offset: 0

Author

Wouter Meeussen

Keywords

• nonn
• more

Comments

For this sequence, only the distances between the two necklaces are taken into account (that is, distances within a necklace are ignored). - Sean A. Irvine, Mar 18 2021

Links

• Sean A. Irvine, Java program (github)
• Index entries for sequences related to necklaces

Crossrefs

Cf. A045611.

Extensions

a(6)-a(10) from Sean A. Irvine, Mar 18 2021