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A056279 as a simple table

na(n)
10
20
31
46
525
689
7301
8960
93024
109305
1128501
1286430
13261625
14788669
152375075
167140720
1721457825
1864435896
19193448101
20580597110
211742343323
225228050949
2315686335501
2447063113320
25141197991000
26423610488665
271270865802276
283812663735790
2911438127792025
3034314649427035

[0,0,1,6,25,89,301,960,3024,9305,28501,86430,
 261625,788669,2375075,7140720,21457825,64435896,
 193448101,580597110,1742343323,5228050949,
 15686335501,47063113320,141197991000,423610488665,
 1270865802276,3812663735790,11438127792025,
 34314649427035]