The number of binary pattern classes in the (2,n)-rectangular grid with 5 '1's and (2n-5) '0's: two patterns are in same class if one of them can be obtained by a reflection or 180-degree rotation of the other.
A222715
The number of binary pattern classes in the (2,n)-rectangular grid with 5 '1's and (2n-5) '0's: two patterns are in same class if one of them can be obtained by a reflection or 180-degree rotation of the other.
Terms
- a(0) =2a(1) =14a(2) =66a(3) =198a(4) =508a(5) =1092a(6) =2156a(7) =3876a(8) =6606a(9) =10626a(10) =16478a(11) =24570a(12) =35672a(13) =50344a(14) =69624a(15) =94248a(16) =125562a(17) =164502a(18) =212762a(19) =271502a(20) =342804a(21) =428076a(22) =529828a(23) =649740a(24) =790790a(25) =954954a(26) =1145718a(27) =1365378a(28) =1617968a(29) =1906128
External references
- oeis: A222715