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A016747 as a simple table

na(n)
00
1128
216384
3279936
42097152
510000000
635831808
7105413504
8268435456
9612220032
101280000000
112494357888
124586471424
138031810176
1413492928512
1521870000000
1634359738368
1752523350144
1878364164096
19114415582592
20163840000000
21230539333248
22319277809664
23435817657216

[0,128,16384,279936,2097152,10000000,35831808,
 105413504,268435456,612220032,1280000000,
 2494357888,4586471424,8031810176,13492928512,
 21870000000,34359738368,52523350144,78364164096,
 114415582592,163840000000,230539333248,
 319277809664,435817657216]