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A025226 as a simple table

na(n)
13
29
354
4405
53402
630618
7288684
82814669
928146690
10287096238
112975361012
1231241290626
13331638315876
143553267670100
1538375290837080
16417331287853245
174566095267100210

[3,9,54,405,3402,30618,288684,2814669,28146690,
 287096238,2975361012,31241290626,331638315876,
 3553267670100,38375290837080,417331287853245,
 4566095267100210]