100020

Appears in sequences

• Positive numbers k such that k and 2*k are anagrams in base 4 (written in base 4).at n=35A023059
• Numbers having four 0's in base 10.at n=19A043492
• Numbers whose sum of digits is 3.at n=37A052217
• Least multiple of n in which the n-th digit from left is 2.at n=4A113557
• Members of A016052 whose digit sum is three.at n=17A119507
• Numbers m that raised to the powers from 1 to k (with k>=1) are multiple of the sum of their digits (m raised to k+1 must not be a multiple). Case k=16.at n=6A135201
• a(n+1) is the least integer > a(n) containing all digits of a(n); a(1)=2.at n=22A155890
• Sum of any three adjacent digits of n^2 is a square.at n=38A174397
• Base 3 numbers that have digits that sum to 3.at n=32A218043
• Let x(0)x(1)x(2)... x(q) denote the decimal expansion of n. Sequence lists the numbers n such that the suffix of decimal expansion x(2)... x(q) is the p-th divisor of n where p is the prefix of decimal expansion x(0)x(1).at n=12A234315
• Concatenate the positions of digits 9, 8,..., 0 in the decimal representation of n, using 1 for the rightmost digit etc., and 0 when the digit does not occur.at n=15A260521
• "Inside numbers". Pick a term "t" and one of its digits "d". Now jump to the right over d digits if "d" is odd, and to the left over d digits if "d" is even. Whatever the "d" you choose, you will stay on "t".at n=40A284515
• Numbers k such that Bernoulli number B_{k} has denominator 56786730.at n=21A295598
• Numbers k such that the sum of the digits and the sum of the square of the digits of k are prime factors of k.at n=39A306701
• Nonzero ternary words such that any non-initial 1 is preceded by 0, and any non-initial 2 is preceded by 00.at n=34A324474
• Numbers whose number of distinct prime factors is greater than the sum of their digits.at n=30A327786