Column k=1 of Brent's table A381083 related to prime gaps 2n.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =4a(5) =30a(6) =18a(7) =15a(8) =30a(9) =180a(10) =150a(11) =2970a(12) =1620a(13) =1782a(14) =3960a(15) =22275a(16) =23760a(17) =757350a(18) =400950a(19) =504900a(20) =908820a(21) =8835750a(22) =8330850a(23) =15904350a(24) =10602900a(25) =8675100a(26) =15904350a(27) =257650470a(28) =222660900a(29) =16604141400