Minimum value t such that all quadruples of Diffy_length >= n have a maximal value >= t.

Terms

a(0) =0a(1) =1a(2) =1a(3) =1a(4) =1a(5) =3a(6) =3a(7) =4a(8) =9a(9) =11a(10) =13a(11) =31a(12) =37a(13) =44a(14) =105a(15) =125a(16) =149a(17) =355a(18) =423a(19) =504a(20) =1201a(21) =1431a(22) =1705a(23) =4063a(24) =4841a(25) =5768a(26) =13745a(27) =16377a(28) =19513a(29) =46499