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A158601 as a simple table

na(n)
020
1420
21620
33620
46420
510020
614420
719620
825620
932420
1040020
1148420
1257620
1367620
1478420
1590020
16102420
17115620
18129620
19144420
20160020
21176420
22193620
23211620
24230420
25250020
26270420
27291620
28313620
29336420
30360020
31384420
32409620
33435620
34462420
35490020

[20,420,1620,3620,6420,10020,14420,19620,25620,
 32420,40020,48420,57620,67620,78420,90020,102420,
 115620,129620,144420,160020,176420,193620,211620,
 230420,250020,270420,291620,313620,336420,360020,
 384420,409620,435620,462420,490020]