A045612 - OEIS

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 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,2`
	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	`Table of n, a(n) for n=0..10.` `Sean A. Irvine, Java program (github)` `Index entries for sequences related to necklaces`
	CROSSREFS	`Cf. A045611.` `Sequence in context: A268570 A141494 A189843 * A103940 A162543 A039744` `Adjacent sequences: A045609 A045610 A045611 * A045613 A045614 A045615`
	KEYWORD	`nonn,more`
	AUTHOR	`Wouter Meeussen`
	EXTENSIONS	`a(6)-a(10) from Sean A. Irvine, Mar 18 2021`
	STATUS	`approved`

Last modified May 21 09:30 EDT 2022. Contains 353908 sequences. (Running on oeis4.)