30844

Appears in sequences

• Integers i such that 9*i = 25 X i, but 17*i is not 49 X i.at n=34A115811
• Number of nX3 1..2 arrays containing at least one of each value, all equal values connected, and rows considered as a single number in nondecreasing order.at n=30A166781
• a(n) = a(n-1) XOR (a(n-2)*3).at n=18A204771