Define a square array B(m,n) (m>=0, n>=0) by B(n, n) = A212196(n)/A181131(n), B(n, n+1) = -A212196(n)/A181131(n), B(m, n) = B(m, n-1) + B(m+1, n-1); a(n) = numerator of B(0,n).

A240776

Define a square array B(m,n) (m>=0, n>=0) by B(n, n) = A212196(n)/A181131(n), B(n, n+1) = -A212196(n)/A181131(n), B(m, n) = B(m, n-1) + B(m+1, n-1); a(n) = numerator of B(0,n).

Terms

    a(0) =1a(1) =-1a(2) =-4a(3) =-1a(4) =-8a(5) =-1a(6) =-8a(7) =-3a(8) =-8a(9) =1a(10) =104a(11) =-41a(12) =-920a(13) =1767a(14) =20168a(15) =-8317a(16) =-2022392a(17) =869807a(18) =291391192a(19) =-129169263a(20) =-2759924456a(21) =250158593a(22) =146772324808a(23) =-67632514765

External references