Number of nX5 0..1 arrays with every element equal to 2, 3 or 5 king-move adjacent elements, with upper left element zero.
A297873
Number of nX5 0..1 arrays with every element equal to 2, 3 or 5 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =11a(2) =0a(3) =20a(4) =80a(5) =231a(6) =579a(7) =2437a(8) =7507a(9) =26278a(10) =91622a(11) =316406a(12) =1091518a(13) =3805139a(14) =13166620a(15) =45743807a(16) =158968332a(17) =552175778a(18) =1918002602a(19) =6665774473a(20) =23158033370a(21) =80468332463a(22) =279615402191a(23) =971597706573
External references
- oeis: A297873