Number of points on surface of cuboctahedron (or icosahedron): a(0) = 1; for n > 0, a(n) = 10n^2 + 2. Also coordination sequence for f.c.c. or A_3 or D_3 lattice.
A005901
Number of points on surface of cuboctahedron (or icosahedron): a(0) = 1; for n > 0, a(n) = 10n^2 + 2. Also coordination sequence for f.c.c. or A_3 or D_3 lattice.
Terms
- a(0) =1a(1) =12a(2) =42a(3) =92a(4) =162a(5) =252a(6) =362a(7) =492a(8) =642a(9) =812a(10) =1002a(11) =1212a(12) =1442a(13) =1692a(14) =1962a(15) =2252a(16) =2562a(17) =2892a(18) =3242a(19) =3612a(20) =4002a(21) =4412a(22) =4842a(23) =5292a(24) =5762a(25) =6252a(26) =6762a(27) =7292a(28) =7842a(29) =8412
External references
- oeis: A005901