Number of n-step up-side self-avoiding walks on the lattice strip {0,1,2,3} x Z (up-side means that the walks move up and sideways but not down).
A171858
Number of n-step up-side self-avoiding walks on the lattice strip {0,1,2,3} x Z (up-side means that the walks move up and sideways but not down).
Terms
- a(0) =1a(1) =2a(2) =4a(3) =9a(4) =19a(5) =39a(6) =79a(7) =161a(8) =330a(9) =678a(10) =1392a(11) =2855a(12) =5853a(13) =12000a(14) =24607a(15) =50463a(16) =103487a(17) =212220a(18) =435191a(19) =892428a(20) =1830073a(21) =3752882a(22) =7695938a(23) =15781850a(24) =32363392a(25) =66366683a(26) =136096274a(27) =279088794a(28) =572319539a(29) =1173639562
External references
- oeis: A171858