T(n,k)=Number of nondecreasing -k..k vectors of length n whose dot product with some nonincreasing -k..k vector equals n.
A226398
T(n,k)=Number of nondecreasing -k..k vectors of length n whose dot product with some nonincreasing -k..k vector equals n.
Terms
- a(0) =2a(1) =2a(2) =2a(3) =2a(4) =12a(5) =2a(6) =2a(7) =20a(8) =12a(9) =2a(10) =2a(11) =32a(12) =68a(13) =48a(14) =2a(15) =2a(16) =48a(17) =120a(18) =146a(19) =38a(20) =2a(21) =2a(22) =64a(23) =224a(24) =448a(25) =258a(26) =128a(27) =2a(28) =2a(29) =88
External references
- oeis: A226398