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A302650 as a simple table

na(n)
11
21
36
428
585
6201
7406
8736
91233
101945
112926
124236
135941
148113
1510830
1614176
1718241
1823121
1928918
2035740
2143701
2252921
2363526
2475648
2589425
26105001
27122526
28142156
29164053
30188385
31215326
32245056
33277761
34313633
35352870
36395676
37442261
38492841
39547638
40606880

[1,1,6,28,85,201,406,736,1233,1945,2926,4236,5941,
 8113,10830,14176,18241,23121,28918,35740,43701,
 52921,63526,75648,89425,105001,122526,142156,
 164053,188385,215326,245056,277761,313633,352870,
 395676,442261,492841,547638,606880]