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A218807 as a simple table

na(n)
129
2993
331741
41015637
532496361
61039771513
733269071149
81064494567893
934060123730017
101089805494659041
1134869985369949693
121115718250329709413
1335699103424100012857
141142247144301883171769
1536547935760902073717133

[29,993,31741,1015637,32496361,1039771513,
 33269071149,1064494567893,34060123730017,
 1089805494659041,34869985369949693,
 1115718250329709413,35699103424100012857,
 1142247144301883171769,36547935760902073717133]