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A157004 as a simple table

na(n)
01
12
26
318
458
5192
6650
72232
87746
927096
1095376
11337404
121198546
134272308
1415273888
1554744268
16196646922
17707747988
182551624304
199213416524
2033313656888
21120604436624
22437112790668
231585877246424
245759085911154

[1,2,6,18,58,192,650,2232,7746,27096,95376,337404,
 1198546,4272308,15273888,54744268,196646922,
 707747988,2551624304,9213416524,33313656888,
 120604436624,437112790668,1585877246424,
 5759085911154]