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A008449 as a simple table

n a(n)
0 1
1 90
2 1260
3 4920
4 13320
5 30492
6 55860
7 94680
8 156240
9 232770
10 332640
11 471240
12 636480
13 835020
14 1098900
15 1391040
16 1720800
17 2181780
18 2614260
19 3118680
20 3889962
21 4519140
22 5207760
23 6237000

[1,90,1260,4920,13320,30492,55860,94680,156240,
 232770,332640,471240,636480,835020,1098900,
 1391040,1720800,2181780,2614260,3118680,3889962,
 4519140,5207760,6237000]

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Last modified November 22 06:06 EST 2018. Contains 317453 sequences. (Running on oeis4.)