Number of 3 X 3 X 3 magic cubes with sum 3n.

Terms

a(0) =1a(1) =19a(2) =121a(3) =439a(4) =1171a(5) =2581a(6) =4999a(7) =8821a(8) =14509a(9) =22591a(10) =33661a(11) =48379a(12) =67471a(13) =91729a(14) =122011a(15) =159241a(16) =204409a(17) =258571a(18) =322849a(19) =398431a(20) =486571a(21) =588589a(22) =705871a(23) =839869a(24) =992101a(25) =1164151a(26) =1357669a(27) =1574371a(28) =1816039a(29) =2084521