Irregular triangle read by rows: T(n,k) = S1(n,k)*2^k, where S1(n,k) is the associated Stirling number of the first kind (cf. A008306) (n >= 0, 0 <= k <= floor(n/2)).
A349479
Irregular triangle read by rows: T(n,k) = S1(n,k)*2^k, where S1(n,k) is the associated Stirling number of the first kind (cf. A008306) (n >= 0, 0 <= k <= floor(n/2)).
Terms
- a(0) =1a(1) =0a(2) =0a(3) =2a(4) =0a(5) =4a(6) =0a(7) =12a(8) =12a(9) =0a(10) =48a(11) =80a(12) =0a(13) =240a(14) =520a(15) =120a(16) =0a(17) =1440a(18) =3696a(19) =1680a(20) =0a(21) =10080a(22) =29232a(23) =19040a(24) =1680a(25) =0a(26) =80640a(27) =256896a(28) =211456a(29) =40320
External references
- oeis: A349479