469762047

Appears in sequences

• a(n) = Sum_{k=0..floor(n/2)} A026615(n, k).at n=29A026623
• a(n) = 7*2^n - 1.at n=26A086224
• a(n) = 7*4^n-1.at n=13A198694
• Smallest m such that A199238(m) = n.at n=27A199262
• Decimal representation of the middle column of the "Rule 175" elementary cellular automaton starting with a single ON (black) cell.at n=28A267604