Can some re-run the proposed Mma code in https://oeis.org/A176047 and try to verify the terms of the sequence? (The row sums are junk...) My best bet at the definition (looking at the code) is t(n,m) = A004001(m+1)+A004001(n-m+1)-A004001(n+1), but this does not match the terms. RJM