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 A111548 Matrix inverse of triangle A111544. 3
 1, -1, 1, -3, -2, 1, -15, -3, -3, 1, -99, -15, -3, -4, 1, -783, -99, -15, -3, -5, 1, -7083, -783, -99, -15, -3, -6, 1, -71415, -7083, -783, -99, -15, -3, -7, 1, -789939, -71415, -7083, -783, -99, -15, -3, -8, 1, -9485343, -789939, -71415, -7083, -783, -99, -15, -3, -9, 1, -122721723, -9485343, -789939, -71415 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,4 COMMENTS The column sequences are all equal after the initial terms and are derived from the logarithm of a factorial series (cf. A111546). LINKS FORMULA T(n, n)=1 and T(n+1, n)=-n-1, else T(n+k+1, k) = -A111546(k) for k>=1. EXAMPLE Triangle begins: 1; -1,1; -3,-2,1; -15,-3,-3,1; -99,-15,-3,-4,1; -783,-99,-15,-3,-5,1; -7083,-783,-99,-15,-3,-6,1; -71415,-7083,-783,-99,-15,-3,-7,1; -789939,-71415,-7083,-783,-99,-15,-3,-8,1; ... PROG (PARI) T(n, k)=if(n

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Last modified January 29 09:12 EST 2022. Contains 350672 sequences. (Running on oeis4.)