Arithmetic mean of first n terms of A001414 is an integer.

Terms

a(0) =2a(1) =8a(2) =18a(3) =26a(4) =27a(5) =53a(6) =344a(7) =539a(8) =1221a(9) =6869a(10) =7271a(11) =10753a(12) =17742a(13) =33289a(14) =59688a(15) =156649a(16) =949350a(17) =2291181a(18) =3115026a(19) =3283468a(20) =4148225a(21) =4493333a(22) =18012397a(23) =80433020a(24) =218082214a(25) =268274214a(26) =639257836a(27) =4081484513a(28) =9373412685a(29) =28315174578