Occurrences of most frequently occurring number in 1-to-n 4-dimensional multiplication table.

Terms

a(0) =1a(1) =6a(2) =12a(3) =28a(4) =36a(5) =60a(6) =60a(7) =96a(8) =132a(9) =180a(10) =180a(11) =276a(12) =276a(13) =276a(14) =396a(15) =468a(16) =468a(17) =576a(18) =576a(19) =756a(20) =864a(21) =864a(22) =864a(23) =1032a(24) =1032a(25) =1032a(26) =1096a(27) =1320a(28) =1320a(29) =1644