Number of lower triangles of an (n+6)X(n+6) 0..4 array with new values introduced in row major order 0..4 and no element unequal to more than one horizontal or vertical neighbor.
A194774
Number of lower triangles of an (n+6)X(n+6) 0..4 array with new values introduced in row major order 0..4 and no element unequal to more than one horizontal or vertical neighbor.
Terms
- a(0) =268a(1) =672a(2) =1736a(3) =4464a(4) =11686a(5) =30608a(6) =80961a(7) =214469a(8) =570921a(9) =1521287a(10) =4061881a(11) =10847647a(12) =28982750a(13) =77406210a(14) =206655490a(15) =551301206a(16) =1469565060a(17) =3913609398a(18) =10412354243a(19) =27674510615a(20) =73480819187a(21) =194908131709a(22) =516485443463
External references
- oeis: A194774