444444

Appears in sequences

• a(n) = 4*(10^n - 1)/9.at n=6A002278
• Repdigit numbers, or numbers whose digits are all equal.at n=49A010785
• Numbers > 9 with all digits the same.at n=39A014181
• Repdigit - 1 is prime.at n=9A028987
• Palindromes with exactly 7 prime factors (counted with multiplicity).at n=31A046333
• Numbers that are divisible by all of their 1 and 2 digit substrings.at n=48A063527
• Geometric mean of digits = 4 and digits are in nondecreasing order.at n=21A069518
• Nonsquarefree numbers obtained by repeating a single digit.at n=18A077572
• Smallest multiple of n using only digits 0 and 4.at n=32A078243
• a(n) = smallest multiple of the n-th prime whose decimal expansion is nnn...n, or 0 if no such number exists.at n=3A078251
• Smallest multiple of n using a single digit with multiplicity, or 0 if no such number exists.at n=27A083116
• Euler-phi applied to A096503 results in these decimal repdigits.at n=44A096504
• Euler-phi applied to A096503 results in these decimal repdigits.at n=46A096504
• Sigma applied to A096841 produces these repdigits: a[n]=A000203[A096841(n)].at n=20A096842
• Sigma applied to A096841 produces these repdigits: a[n]=A000203[A096841(n)].at n=21A096842
• Sigma applied to A096841 produces these repdigits: a[n]=A000203[A096841(n)].at n=23A096842
• Sigma applied to A096841 produces these repdigits: a[n]=A000203[A096841(n)].at n=24A096842
• Sigma applied to A096841 produces these repdigits: a[n]=A000203[A096841(n)].at n=31A096842
• Sigma applied to A096841 produces these repdigits: a[n]=A000203[A096841(n)].at n=32A096842
• a(n) is the least positive integer in base 10 containing n fours that is divisible by n.at n=5A112897