T(n,k) = 1/k! * Sum_{i=0..k} (-1)^(k-i) *C(k,i) * A258306(n,i); triangle T(n,k), n>=0, 0<=k<=floor(n/2), read by rows.
A258307
T(n,k) = 1/k! * Sum_{i=0..k} (-1)^(k-i) *C(k,i) * A258306(n,i); triangle T(n,k), n>=0, 0<=k<=floor(n/2), read by rows.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =1a(4) =5a(5) =2a(6) =14a(7) =9a(8) =1a(9) =43a(10) =28a(11) =3a(12) =141a(13) =114a(14) =21a(15) =1a(16) =490a(17) =421a(18) =82a(19) =4a(20) =1785a(21) =1750a(22) =442a(23) =38a(24) =1a(25) =6789a(26) =7114a(27) =1941a(28) =180a(29) =5
External references
- oeis: A258307