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A191801 as a simple table

na(n)
01
11
24
328
4251
52573
628813
7343833
84308210
956154805
10756731761
1110499096630
12149551069156
132182935186698
1432613646656198
15498420592612153
167790219357236805
17124545937719356873
182037614647316548891
1934134979366157116560

[1,1,4,28,251,2573,28813,343833,4308210,56154805,
 756731761,10499096630,149551069156,2182935186698,
 32613646656198,498420592612153,7790219357236805,
 124545937719356873,2037614647316548891,
 34134979366157116560]