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A033577 as a simple table

n a(n)
0 1
1 20
2 63
3 130
4 221
5 336
6 475
7 638
8 825
9 1036
10 1271
11 1530
12 1813
13 2120
14 2451
15 2806
16 3185
17 3588
18 4015
19 4466
20 4941
21 5440
22 5963
23 6510
24 7081
25 7676
26 8295
27 8938
28 9605
29 10296
30 11011
31 11750
32 12513
33 13300
34 14111
35 14946
36 15805
37 16688
38 17595
39 18526
40 19481
41 20460
42 21463

[1,20,63,130,221,336,475,638,825,1036,1271,1530,
 1813,2120,2451,2806,3185,3588,4015,4466,4941,5440,
 5963,6510,7081,7676,8295,8938,9605,10296,11011,
 11750,12513,13300,14111,14946,15805,16688,17595,
 18526,19481,20460,21463]

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Last modified December 17 04:09 EST 2017. Contains 296096 sequences.