Number of -n..n arrays of 6 elements with first and second differences also in -n..n.
A201091
Number of -n..n arrays of 6 elements with first and second differences also in -n..n.
Terms
- a(0) =89a(1) =1653a(2) =11817a(3) =52401a(4) =172767a(5) =468159a(6) =1100401a(7) =2326467a(8) =4525989a(9) =8241301a(10) =14210297a(11) =23419633a(12) =37141027a(13) =56999737a(14) =85011997a(15) =123671261a(16) =175984071a(17) =245577021a(18) =336727861a(19) =454496567a(20) =604748137a(21) =794311497a(22) =1030990023a(23) =1323752505
External references
- oeis: A201091