Linear coefficient (in absolute value) of the quadratic polynomials giving the numbers of 2k-cycles in the n X n grid graph for n >= k-1.
A302336
Linear coefficient (in absolute value) of the quadratic polynomials giving the numbers of 2k-cycles in the n X n grid graph for n >= k-1.
Terms
- a(0) =0a(1) =2a(2) =6a(3) =28a(4) =140a(5) =740a(6) =4056a(7) =22904a(8) =132344a(9) =778832a(10) =4652404a(11) =28140536a(12) =172021360a(13) =1061153560a(14) =6597813620a(15) =41307119692a(16) =260198053200
External references
- oeis: A302336