122333

Appears in sequences

• Numbers in which all pairs of consecutive base-4 digits differ by 2.at n=24A033082
• Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 1,3.at n=8A037576
• Concatenate 1 once, 2 twice, 3 three times, up to n n times.at n=2A098129
• Any digit d in the sequence says: "I am part of an integer in which you'll find d digits d".at n=27A108571
• n = Sum_{b} c_b*b! in the factorial base rewritten by c_b-fold repetition of b, b=1,2,3,....at n=22A111095
• Decimal representation of n-th iteration of the Rule 158 elementary cellular automaton starting with a single black cell.at n=8A118171
• Decimal representation of n-th iteration of the Rule 188 elementary cellular automaton starting with a single black cell.at n=16A118173
• Sorted list of strings that can be obtained by starting with 123 and repeatedly doubling any substring in place.at n=27A135475
• Numbers such that each decimal digit d (for all d in the range 1 <= d <= 9) occurs only in runs of length exactly d.at n=17A140057
• Numbers which have d digits "d", whenever one of their digits is "d", ordered by largest digit, then by size of the number.at n=20A247700
• Numbers whose digits are nondecreasing and which have exactly d digits "d" whenever there is at least one digit "d".at n=9A247701
• Number of (n+3) X (1+3) 0..1 arrays with each row divisible by 15 and column not divisible by 15, read as a binary number with top and left being the most significant bits.at n=13A263119
• Decimal representation of the middle column of the "Rule 158" elementary cellular automaton starting with a single ON (black) cell.at n=16A265381
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 597", based on the 5-celled von Neumann neighborhood.at n=17A283217
• Numbers such that each digit "d" occurs d times, for every digit from 1 to the largest digit.at n=4A356369
• Record high values in A358497.at n=33A358615