56789

Appears in sequences

• Numbers in which each digit is the (immediate) successor of the previous one (if it exists) and 0 is considered the successor of 9.at n=41A059043
• a(n) = (10^n-1)*(91/81)-n*10^n/9.at n=4A064616
• Concatenation of n numbers starting with n.at n=4A077309
• Semiprimes with consecutive digits.at n=17A118697
• a(n) = Sum_{ k = 0 to n-1} ( subtract k modulo 9 from 9, multiply this by k-th power of 10 ).at n=4A133486
• Numbers with digits in ascending order that differ exactly by 1.at n=34A138141
• Composites with consecutive (ascending) digits.at n=31A161760
• Triangle read by rows: T(n,k) = value of the string of length k beginning at position n in the concatenation of natural numbers in decimal representation, 1<=k<=n.at n=14A162711
• Minimum number n, not already present, that permits the cyclic repetition of the decimal digits 1,2,3,4,5,6,7,8,9 in the sequence.at n=44A165307
• Floor(1/{(6+n^4)^(1/4)}), where {}=fractional part.at n=43A184630
• Put the natural numbers together without spaces and read them five at a time advancing one space each time.at n=4A193493
• Number of (w,x,y) with all terms in {0,...,n} and 2*w >= |x+y-z|.at n=43A213397
• Semiprimes with consecutive (ascending) digits.at n=9A215477
• Triangle T(n,k) read by rows: Substring of k digits of sequence A007376, ending at position n, 1 <= k <= n.at n=40A224841
• Smallest number with n = sum of distinct digits in decimal representation, cf. A217928.at n=35A227378
• Square array A(m,n) = concatenation of { m, m+1, ..., m+n }, with m, n >= 1, read by falling antidiagonals.at n=32A285807
• Composite numbers k such that the sum of their aliquot parts divides k+1.at n=16A306532
• Lexicographically earliest sequence of distinct positive numbers such that if we add ten successive digits the result is divisible by 10.at n=40A327735
• Numbers m with decimal expansion (d_k, ..., d_1) such that d_i = m * i mod 10 for i = 1..k.at n=38A344748
• Numbers whose digits are nonzero, consecutive, and all increasing or all decreasing.at n=56A352927