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A180677 as a simple table

n a(n)
0 1
1 3
2 15
3 87
4 503
5 2871
6 16311
7 92599
8 525751
9 2985399
10 16952759
11 96267703
12 546663863
13 3104271799
14 17627835831
15 100100959671
16 568430652855
17 3227875241399
18 18329726840247
19 104086701305271
20 591063984860599

[1,3,15,87,503,2871,16311,92599,525751,2985399,
 16952759,96267703,546663863,3104271799,
 17627835831,100100959671,568430652855,
 3227875241399,18329726840247,104086701305271,
 591063984860599]

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)