Number of -n..n arrays of 6 elements with first, second and third differences also in -n..n.
A202127
Number of -n..n arrays of 6 elements with first, second and third differences also in -n..n.
Terms
- a(0) =35a(1) =663a(2) =4763a(3) =21093a(4) =69573a(5) =188505a(6) =443169a(7) =936715a(8) =1822729a(9) =3318565a(10) =5722319a(11) =9430801a(12) =14956593a(13) =22952527a(14) =34234227a(15) =49800691a(16) =70867027a(17) =98891365a(18) =135597851a(19) =183019459a(20) =243528297a(21) =319860401a(22) =415169845a(23) =533062403a(24) =677620099a(25) =853469649
External references
- oeis: A202127