Number of self-avoiding walks of any length from NW to SW corners of a grid or lattice with 4 rows and n columns.

A214931

Number of self-avoiding walks of any length from NW to SW corners of a grid or lattice with 4 rows and n columns.

Terms

    a(0) =1a(1) =8a(2) =38a(3) =178a(4) =844a(5) =4012a(6) =19072a(7) =90658a(8) =430938a(9) =2048450a(10) =9737260a(11) =46285868a(12) =220018976a(13) =1045856010a(14) =4971456754a(15) =23631725866a(16) =112332963420a(17) =533972624844

External references