T(n,k) is the number of -k..k arrays of n elements with first, second and third differences also in -k..k.
A202124
T(n,k) is the number of -k..k arrays of n elements with first, second and third differences also in -k..k.
Terms
- a(0) =3a(1) =5a(2) =7a(3) =7a(4) =19a(5) =13a(6) =9a(7) =37a(8) =57a(9) =19a(10) =11a(11) =61a(12) =153a(13) =127a(14) =27a(15) =13a(16) =91a(17) =323a(18) =475a(19) =293a(20) =35a(21) =15a(22) =127a(23) =587a(24) =1279a(25) =1509a(26) =663a(27) =47a(28) =17a(29) =169
External references
- oeis: A202124