This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A260322 #16 Apr 30 2023 11:17:14 %S A260322 1,-1,2,2,-6,6,0,24,-24,24,9,-80,60,-120,120,35,450,240,360,-720,720, %T A260322 230,-2142,-2310,-840,2520,-5040,5040,1624,17696,9744,21840,-6720, %U A260322 20160,-40320,40320,13209,-112464,91224,-184464,15120,-60480,181440,-362880,362880 %N A260322 Triangle read by rows: T(n,k) = logarithmic polynomial G_k^(n)(x) evaluated at x=1. %H A260322 J. M. Gandhi, <a href="/A002741/a002741.pdf">On logarithmic numbers</a>, Math. Student, 31 (1963), 73-83. Gives first 10 rows. [Annotated scanned copy] %e A260322 Triangle begins: %e A260322 1; %e A260322 -1, 2; %e A260322 2, -6, 6; %e A260322 0, 24, -24, 24; %e A260322 9, -80, 60, -120, 120; %e A260322 35, 450, 240, 360, -720, 720; %e A260322 230, -2142, -2310, -840, 2520, -5040, 5040; %e A260322 ... %p A260322 A260322 := proc(n,r) %p A260322 if r = 0 then %p A260322 1 ; %p A260322 elif n > r+1 then %p A260322 0 ; %p A260322 else %p A260322 add( (-1)^(r-j*n)/(r-j*n)!/j,j=1..(r)/n) ; %p A260322 %*r! ; %p A260322 end if; %p A260322 end proc: %p A260322 for r from 1 to 20 do %p A260322 for n from 1 to r do %p A260322 printf("%a,",A260322(n,r)) ; %p A260322 end do: %p A260322 printf("\n") ; %p A260322 end do: # _R. J. Mathar_, Jul 24 2015 %t A260322 T[n_, k_] := Which[n == 0, 1, k > n+1, 0, True, %t A260322 Sum[(-1)^(n-j*k)/(n-j*k)!/j, {j, 1, n/k}]] n!; %t A260322 Table[T[n, k], {n, 1, 9}, {k, 1, n}] // Flatten (* _Jean-François Alcover_, Apr 30 2023 *) %Y A260322 Rows, column sums give A002741, A002742, A002743, A002744. %Y A260322 Main diagonal gives A000142. %Y A260322 Cf. A260323-A260325. %K A260322 sign,tabl %O A260322 1,3 %A A260322 _N. J. A. Sloane_, Jul 23 2015