1835007

Appears in sequences

• a(n) = Sum_{k=0..floor(n/2)} A026615(n, k).at n=21A026623
• a(n) = 7*2^n - 1.at n=18A086224
• Numbers of the form i*8^j-1 (i=1..7, j >= 0).at n=48A165804
• a(n) = 7*4^n-1.at n=9A198694
• a(n) = 7*8^n - 1.at n=6A198855
• Positions of records in A249695.at n=22A249715
• Decimal representation of the middle column of the "Rule 175" elementary cellular automaton starting with a single ON (black) cell.at n=20A267604
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 613", based on the 5-celled von Neumann neighborhood.at n=20A289936
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 637", based on the 5-celled von Neumann neighborhood.at n=23A290069