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A202980 as a simple table

na(n)
01
11
221
33581
44638641
548800828001
64323567045653269
73282556699972913697517
821588080014422603968890377825
91239061910207197852963732743864398913
10624049391401084282980615178692488088532058133

[1,1,21,3581,4638641,48800828001,4323567045653269,
 3282556699972913697517,
 21588080014422603968890377825,
 1239061910207197852963732743864398913,
 624049391401084282980615178692488088532058133]