A042450 - OEIS

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A042450 as a simple table

n	a(n)
0	27
1	55
2	192
3	247
4	686
5	933
6	1619
7	2552
8	19483
9	80484
10	99967
11	680286
12	12345115
13	74750976
14	87096091
15	423135340
16	3049043471
17	3472178811
18	6521222282
19	9993401093
20	26508024468
21	36501425561
22	136012301151

[27,55,192,247,686,933,1619,2552,19483,80484, 99967,680286,12345115,74750976,87096091,423135340, 3049043471,3472178811,6521222282,9993401093, 26508024468,36501425561,136012301151]