Tetrahedron of numbers T(i,j,k) = (i+2*j+3*k)!/(i!*j!*k!*2^j*6^k) read with entries in the order defined in A144625.
A144626
Tetrahedron of numbers T(i,j,k) = (i+2*j+3*k)!/(i!*j!*k!*2^j*6^k) read with entries in the order defined in A144625.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =3a(6) =3a(7) =4a(8) =10a(9) =10a(10) =1a(11) =6a(12) =15a(13) =15a(14) =10a(15) =60a(16) =105a(17) =70a(18) =280a(19) =280a(20) =1a(21) =10a(22) =45a(23) =105a(24) =105a(25) =20a(26) =210a(27) =840a(28) =1260a(29) =280
External references
- oeis: A144626