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A278430 as a simple table

na(n)
16
2100
31609
419624
5178352
61287838
77795151
841058743
9193149285
10826734193
113264405727
1212016477160
1341579224479
14136142690453
15424140541353
161263030700894
173609095743983
189929303441355
1926377932553959
2067838309686132

[6,100,1609,19624,178352,1287838,7795151,41058743,
 193149285,826734193,3264405727,12016477160,
 41579224479,136142690453,424140541353,
 1263030700894,3609095743983,9929303441355,
 26377932553959,67838309686132]