Number of -n..n arrays of 7 elements with adjacent element differences also in -n..n.
A201046
Number of -n..n arrays of 7 elements with adjacent element differences also in -n..n.
Terms
- a(0) =577a(1) =17981a(2) =182349a(3) =1042167a(4) =4211559a(5) =13497523a(6) =36644243a(7) =87831605a(8) =191065045a(9) =384593857a(10) =726495089a(11) =1301560155a(12) =2229621291a(13) =3675454983a(14) =5860399495a(15) =9075823625a(16) =13698583817a(17) =20208606757a(18) =29208734581a(19) =41446969823a(20) =57841257231
External references
- oeis: A201046