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A290075 as a simple table

na(n)
11
21
32
43
55
68
714
824
944
1080
11152
12288
13560
141088
152144
164224
178384
1816640
1933152
2066048
21131840
22263168
23525824
241050624
252100224
264198400
278394752
2816785408
2933566720
3067125248
31134242304
32268468224
33536920064
341073807360
352147581952
364295098368

[1,1,2,3,5,8,14,24,44,80,152,288,560,1088,2144,
 4224,8384,16640,33152,66048,131840,263168,525824,
 1050624,2100224,4198400,8394752,16785408,33566720,
 67125248,134242304,268468224,536920064,1073807360,
 2147581952,4295098368]