A392744

a(n) = Sum_{k=0..n} |Stirling1(n+k,2*k)|.

1, 1, 4, 22, 157, 1368, 13995, 163779, 2152349, 31326760, 499539900, 8651755865, 161591063250, 3235298221401, 69085973044125, 1566556077233897, 37577774143362824, 950374452156347514, 25266942445833523121, 704302695217027889560, 20534611808242819061155, 624893326066824277558519

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