login

A213847 as a triangular array

3
169
473615
104895621
1951761317627
3283052481739633
51148441532021511639
75272164052539225713645
1059102493179663546429915651
14401401

A213847 as a square array

3164710419532851175210591440
9368917630548472110241401
1556131248415640931
2176173320525796
2796215392635
33116257464
39136299
45156
51
3164710419532851175210591440
9368917630548472110241401
1556131248415640931
2176173320525796
2796215392635
33116257464
39136299
45156
51