A225316 - cp's OEIS frontend

A225316 a(n) = practical(2^n) where practical(n) is the n-th practical number (A005153).

n	a(n)
0	1
1	2
2	6
3	18
4	42
5	108
6	270
7	594
8	1350
9	3008
10	6678
11	14620
12	31724
13	67712
14	143792
15	305856
16	651126
17	1377918
18	2908308
19	6120672
20	12848472
21	26854938
22	55963260
23	116389896
24	241526012
25	500796416
26	1037764968
27	2147851712
28	4440630150
29	9176799780
30	18946755918
31	39092425578
32	80569691202

[1, 2, 6, 18, 42, 108, 270, 594, 1350, 3008, 6678, 14620, 31724, 67712, 143792, 305856, 651126, 1377918, 2908308, 6120672, 12848472, 26854938, 55963260, 116389896, 241526012, 500796416, 1037764968, 2147851712, 4440630150, 9176799780, 18946755918, 39092425578, 80569691202]

cp's OEIS Frontend

A225316 a(n) = practical(2^n) where practical(n) is the n-th practical number (A005153).

Table of values

List of values