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A013954 as a simple table

na(n)
11
265
3730
44161
515626
647450
7117650
8266305
9532171
101015690
111771562
123037530
134826810
147647250
1511406980
1617043521
1724137570
1834591115
1947045882
2065019786
2185884500
22115151530
23148035890
24194402650
25244156251
26313742650
27387952660
28489541650
29594823322
30741453700

[1,65,730,4161,15626,47450,117650,266305,532171,
 1015690,1771562,3037530,4826810,7647250,11406980,
 17043521,24137570,34591115,47045882,65019786,
 85884500,115151530,148035890,194402650,244156251,
 313742650,387952660,489541650,594823322,741453700]