Increasing gaps in A038593 (upper terms).

Terms

a(0) =19a(1) =56a(2) =91a(3) =271a(4) =602a(5) =784a(6) =1115a(7) =2368a(8) =3752a(9) =4348a(10) =6130a(11) =7254a(12) =13084a(13) =20862a(14) =22904a(15) =28415a(16) =56456a(17) =57547a(18) =75923a(19) =92232a(20) =201970a(21) =268793a(22) =306007a(23) =413532a(24) =422910a(25) =497666a(26) =918729a(27) =1671130a(28) =1710424a(29) =2633408