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A197907 as a simple table

n a(n)
1 256
2 1526
3 15242
4 106442
5 534598
6 2091240
7 6776037
8 18992711
9 47486564
10 108285671
11 228948164
12 454458311
13 855154436
14 1537112039
15 2655445796
16 4431034439
17 7171212836
18 11295015911
19 17363599364
20 26116502471
21 38514458564
22 55789499111
23 79503137636
24 111613460039

[256,1526,15242,106442,534598,2091240,6776037,
 18992711,47486564,108285671,228948164,454458311,
 855154436,1537112039,2655445796,4431034439,
 7171212836,11295015911,17363599364,26116502471,
 38514458564,55789499111,79503137636,111613460039]

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Last modified December 9 16:10 EST 2016. Contains 278985 sequences.