a(n,m) tabl head (triangle) for A129462 n\m 0 1 2 3 4 5 6 7 8 9 ... 0 1 0 0 0 0 0 0 0 0 0 1 -1 1 0 0 0 0 0 0 0 0 2 0 -2 1 0 0 0 0 0 0 0 3 0 -6 1 1 0 0 0 0 0 0 4 0 -48 -4 12 1 0 0 0 0 0 5 0 -720 -204 208 35 1 0 0 0 0 6 0 -17280 -7776 5208 1348 74 1 0 0 0 7 0 -604800 -358560 179688 64580 5138 133 1 0 0 8 0 -29030400 -20839680 8175744 3888528 400384 14952 216 1 0 9 0 -1828915200 -1516112640 472666752 291010032 36493200 1753624 36624 327 1 . . Row sums give A129463= [1,0,-1,-4,-39,-680,-18425,-713820,-37390255,-2543067280,...] The column sequences give A000007, A129464, A129465, A129466 for m=0,1,2,3. ###################################### e.o.f. #####################################################