190120

Appears in sequences

• Number of 4-dimensional cubic lattice walks that start and end at the origin after 2n steps, free to pass through origin at intermediate stages.at n=4A039699
• Weight distribution of [97,49,15] binary quadratic-residue (or QR) code.at n=19A069646
• Number of nX3 0..3 arrays with no element equal to the sum of elements to its left or the sum of elements above it or the sum of the elements diagonally to its northwest or the sum of the elements antidiagonally to its northeast, modulo 4.at n=11A240245
• Number of 2n-move closed giraffe paths on an unbounded chessboard from a given square to the same square.at n=4A253974
• Number of 2n-move closed zebra paths on an unbounded chessboard from a given square to the same square.at n=4A254459
• Square array A(n,k) = (2*n)! [x^n] BesselI(0, 2*sqrt(x))^k read by antidiagonals.at n=40A287318
• a(n) = (2*n)! * [x^(2*n)] BesselI(0,2*x)^n.at n=4A303503
• Number of 2n-move closed antelope paths on an unbounded chessboard from a given square to the same square.at n=4A307347
• The records for distance squared for step lengths between adjacent primes in A330979, the visited primes for a walk stepping to the closest unvisited prime on the Ulam Spiral.at n=32A331027