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A042575 as a simple table

n a(n)
0 1
1 1
2 2
3 7
4 23
5 76
6 99
7 175
8 9899
9 10074
10 19973
11 69993
12 229952
13 759849
14 989801
15 1749650
16 98970201
17 100719851
18 199690052
19 699790007
20 2299060073
21 7596970226
22 9896030299
23 17493000525
24 989504059699
25 1006997060224
26 1996501119923
27 6996500419993
28 22986002379902

[1,1,2,7,23,76,99,175,9899,10074,19973,69993,
 229952,759849,989801,1749650,98970201,100719851,
 199690052,699790007,2299060073,7596970226,
 9896030299,17493000525,989504059699,1006997060224,
 1996501119923,6996500419993,22986002379902]

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Last modified March 29 07:27 EDT 2024. Contains 371265 sequences. (Running on oeis4.)