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A019318 as a simple table

n a(n)
1 1
2 2
3 16
4 252
5 6814
6 244344
7 10746377
8 553319048
9 32611596056
10 2163792255680
11 159593799888052
12 12952412056879996
13 1147044793316531040
14 110066314584030859544
15 11375695977099383509351
16 1259843950257390597789296
17 148842380543159458506703546
18 18685311541775061906510072648
19 2483858381692984848273972297368
20 348545122958862200122401771463328

[1,2,16,252,6814,244344,10746377,553319048,
 32611596056,2163792255680,159593799888052,
 12952412056879996,1147044793316531040,
 110066314584030859544,11375695977099383509351,
 1259843950257390597789296,
 148842380543159458506703546,
 18685311541775061906510072648,
 2483858381692984848273972297368,
 348545122958862200122401771463328]

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Last modified April 19 02:45 EDT 2024. Contains 371782 sequences. (Running on oeis4.)