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A161805 as a simple table

n a(n)
0 1
1 12
2 66
3 255
4 903
5 2970
6 8571
7 23001
8 59763
9 145164
10 333693
11 751059
12 1623009
13 3363576
14 6872307
15 13677228
16 26351985
17 50309910
18 94392525
19 172538934
20 313558506
21 563064207
22 988996095
23 1730456433
24 3001805067
25 5106353439

[1,12,66,255,903,2970,8571,23001,59763,145164,
 333693,751059,1623009,3363576,6872307,13677228,
 26351985,50309910,94392525,172538934,313558506,
 563064207,988996095,1730456433,3001805067,
 5106353439]

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)