T(n,k)=Number of zero-sum -k..k arrays of n elements with first and second differences also in -k..k.
A201873
T(n,k)=Number of zero-sum -k..k arrays of n elements with first and second differences also in -k..k.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =3a(6) =1a(7) =3a(8) =5a(9) =3a(10) =1a(11) =5a(12) =15a(13) =19a(14) =5a(15) =1a(16) =5a(17) =21a(18) =45a(19) =45a(20) =11a(21) =1a(22) =7a(23) =27a(24) =95a(25) =169a(26) =129a(27) =21a(28) =1a(29) =7
External references
- oeis: A201873