Number of lower triangles of an (n+4) X (n+4) 0..3 array with new values introduced in row major order 0..3 and no element unequal to more than one horizontal or vertical neighbor.
A194773
Number of lower triangles of an (n+4) X (n+4) 0..3 array with new values introduced in row major order 0..3 and no element unequal to more than one horizontal or vertical neighbor.
Terms
- a(0) =43a(1) =105a(2) =265a(3) =655a(4) =1641a(5) =4069a(6) =10121a(7) =25025a(8) =61809a(9) =152019a(10) =372979a(11) =912017a(12) =2224175a(13) =5408825a(14) =13120905a(15) =31752431a(16) =76673045a(17) =184762437a(18) =444388957a(19) =1066954113a(20) =2557518625a(21) =6121119363a(22) =14629468735a(23) =34918297649a(24) =83242029523a(25) =198212839881
External references
- oeis: A194773