a(n) = Sum_{k=0..n} A011971(n, k) * (-2)^(n - k).
A367809
a(n) = Sum_{k=0..n} A011971(n, k) * (-2)^(n - k).
Terms
- a(0) =1a(1) =0a(2) =7a(3) =-17a(4) =166a(5) =-931a(6) =8333a(7) =-67902a(8) =668341a(9) =-6733957a(10) =74909152a(11) =-875130273a(12) =10931723505a(13) =-143624036492
External references
- oeis: A367809