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A187814 as a simple table

na(n)
01
11
26
341
4334
52901
626651
7253709
82483395
924829132
10252506507
112603798287
1227161758393
13286118173600
143039211373800
1532517513415886
16350122302629869
173790909121211262
1841249405668333107
19450832515809731316
204947009705400704588
2154479711308604703264
22601933495810972446631

[1,1,6,41,334,2901,26651,253709,2483395,24829132,
 252506507,2603798287,27161758393,286118173600,
 3039211373800,32517513415886,350122302629869,
 3790909121211262,41249405668333107,
 450832515809731316,4947009705400704588,
 54479711308604703264,601933495810972446631]