a(n,m) tabl head (triangle) for A096940: (1,5)-Pascal n\m 0 1 2 3 4 5 6 7 8 9 0 5 0 0 0 0 0 0 0 0 0 1 1 5 0 0 0 0 0 0 0 0 2 1 6 5 0 0 0 0 0 0 0 3 1 7 11 5 0 0 0 0 0 0 4 1 8 18 16 5 0 0 0 0 0 5 1 9 26 34 21 5 0 0 0 0 6 1 10 35 60 55 26 5 0 0 0 7 1 11 45 95 115 81 31 5 0 0 8 1 12 56 140 210 196 112 36 5 0 9 1 13 68 196 350 406 308 148 41 5 etc.