Number of n X 5 binary arrays with all 1s connected, a path of 1s from upper left corner to lower right corner, and no 1 having more than two 1s adjacent.
A163688
Number of n X 5 binary arrays with all 1s connected, a path of 1s from upper left corner to lower right corner, and no 1 having more than two 1s adjacent.
Terms
- a(0) =1a(1) =13a(2) =83a(3) =389a(4) =1561a(5) =5808a(6) =21608a(7) =81280a(8) =302869a(9) =1103582a(10) =3937976a(11) =13827871a(12) =47923048a(13) =164209208a(14) =557233266a(15) =1875667336a(16) =6269957318a(17) =20829495789a(18) =68804588538a(19) =226093625926a(20) =739449283873
External references
- oeis: A163688