224444

Appears in sequences

• Replace each 1 in decimal expansion of n with 1 1's, each 2 with 2 2's, etc. (0 vanishes).at n=23A048376
• Self-describing numbers: reading the number gives a (possibly redundant) description of the number.at n=2A109776
• 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=24A140057
• Number of binary strings of length n with equal numbers of 00001 and 01001 substrings.at n=19A164198
• Numbers whose digits are nondecreasing and which have exactly d digits "d" whenever there is at least one digit "d".at n=11A247701
• Smallest b > 1 such that b^(p-1) == 1 (mod p^4) for p = prime(n).at n=14A353937
• Numbers whose "Look and Say" description (cf. A045918) is a substring of the number.at n=6A369132