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A277935 as a simple table

n a(n)
1 0
2 2
3 12
4 42
5 112
6 252
7 504
8 924
9 1584
10 2574
11 4004
12 6006
13 8736
14 12376
15 17136
16 23256
17 31008
18 40698
19 52668
20 67298
21 85008
22 106260
23 131560
24 161460
25 196560
26 237510
27 285012
28 339822
29 402752
30 474672
31 556512
32 649264
33 753984
34 871794
35 1003884
36 1151514
37 1316016
38 1498796

[0,2,12,42,112,252,504,924,1584,2574,4004,6006,
 8736,12376,17136,23256,31008,40698,52668,67298,
 85008,106260,131560,161460,196560,237510,285012,
 339822,402752,474672,556512,649264,753984,871794,
 1003884,1151514,1316016,1498796]

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Last modified June 4 15:24 EDT 2024. Contains 373099 sequences. (Running on oeis4.)