Mark each point on the n X n X n X n grid with the number of points that are visible from it; a(n) is the number of distinct values in the grid.
A339947
Mark each point on the n X n X n X n grid with the number of points that are visible from it; a(n) is the number of distinct values in the grid.
Terms
- a(0) =1a(1) =5a(2) =5a(3) =13a(4) =5a(5) =33a(6) =23a(7) =30a(8) =25a(9) =69a(10) =23a(11) =150a(12) =79a(13) =119a(14) =161a(15) =385a(16) =125a(17) =501a(18) =178a(19) =443a(20) =548a(21) =1105a(22) =273a(23) =1119a(24) =921a(25) =1339a(26) =1202a(27) =2049a(28) =228a(29) =2237
External references
- oeis: A339947