Number of grid points covered by a truncated triangle drawn on the hexagonal lattice with the short sides having length n and the long sides length 2*n.
A342914
Number of grid points covered by a truncated triangle drawn on the hexagonal lattice with the short sides having length n and the long sides length 2*n.
Terms
- a(0) =1a(1) =12a(2) =36a(3) =73a(4) =123a(5) =186a(6) =262a(7) =351a(8) =453a(9) =568a(10) =696a(11) =837a(12) =991a(13) =1158a(14) =1338a(15) =1531a(16) =1737a(17) =1956a(18) =2188a(19) =2433a(20) =2691a(21) =2962a(22) =3246a(23) =3543a(24) =3853a(25) =4176a(26) =4512a(27) =4861a(28) =5223a(29) =5598
External references
- oeis: A342914