65187

Appears in sequences

• Tennis ball problem: Balls 1 and 2 are thrown into a room; you throw one on lawn; then balls 3 and 4 are thrown in and you throw any of the 3 balls onto the lawn; then balls 5 and 6 are thrown in and you throw one of the 4 balls onto the lawn; after n turns, consider all possible collections on lawn and add all the values.at n=7A031970
• Number of transpose partition pairs of order n whose number of odd parts differ by numbers of the form 4*k + 2.at n=50A190101
• Number of idempotent 3X3 -n..n matrices of rank 2.at n=19A223452
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 113", based on the 5-celled von Neumann neighborhood.at n=15A278292