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A149424 formatted as a simple table:

n a(n)
0 1
1 1
2 4
3 13
4 40
5 136
6 496
7 1753
8 6256
9 22912
10 85216
11 314836
12 1170688
13 4396048
14 16623328
15 62744017
16 237680992
17 904962400
18 3459831424
19 13219219972
20 50621972224
21 194465172304
22 749061374848
23 2884682636764
24 11126422372864
25 43007603099296
26 166555051934848
27 644984620465264
28 2500560314630656

[1,1,4,13,40,136,496,1753,6256,22912,85216,314836,
 1170688,4396048,16623328,62744017,237680992,
 904962400,3459831424,13219219972,50621972224,
 194465172304,749061374848,2884682636764,
 11126422372864,43007603099296,166555051934848,
 644984620465264,2500560314630656]

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.


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