a(n) is the smallest n-gonal number with exactly n prime factors (counted with multiplicity).

A358863

a(n) is the smallest n-gonal number with exactly n prime factors (counted with multiplicity).

Terms

    a(0) =4a(1) =28a(2) =16a(3) =176a(4) =4950a(5) =8910a(6) =1408a(7) =346500a(8) =277992a(9) =7542080a(10) =326656a(11) =544320a(12) =120400000a(13) =145213440a(14) =48549888a(15) =4733575168a(16) =536813568a(17) =2149576704a(18) =3057500160a(19) =938539560960a(22) =99956555776

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