127296

Appears in sequences

• Number of ways to place a non-attacking white and black king on n X n chessboard.at n=18A035286
• Values of n such that N=(an+1)(bn+1)(cn+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,33.at n=26A064253
• Let M = the 3 X 3 matrix [1 1 1; 3 1 0; 2 0 0]. Perform M^n * [1 0 0] getting (1, 3, 2; 6, 6, 2; 14, 24, 12; 50, 66, 28; ...) which we string together to form the sequence.at n=30A107271
• a(n) = 13 + floor(Sum_{j=1..n-1} a(j)/3).at n=32A120157
• Number of nX2 arrays containing 2 copies of 0..n-1 with no equal horizontal, vertical, diagonal or antidiagonal neighbors and new values introduced sequentially from 0.at n=7A265419
• T(n,k) = Number of n X k arrays containing k copies of 0..n-1 with no equal horizontal, vertical, diagonal or antidiagonal neighbors and new values introduced sequentially from 0.at n=43A265421
• Bitwise XOR of trajectories of rule 30 and rule 150, when both are started from a lone 1 cell: a(n) = A110240(n) XOR A038184(n).at n=9A327972