33313

Appears in sequences

• Numbers having four 3's in base 10.at n=10A043504
• Numbers whose base-8 representation has exactly 6 runs.at n=22A043628
• Roman numerals written using 1 for I, 2 for V, 3 for X, 4 for L, 5 for C, 6 for D, 7 for M.at n=38A061493
• Near-repdigit semiprimes with 3 as repeated digit.at n=25A105984
• List of primitive words over the alphabet {1,3}.at n=50A213970
• Numbers k for which the digital sum of k contains the same distinct digits as k itself.at n=41A249515
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1) + b(n-2) + 1, where a(0) = 1, a(1) = 2, b(0) = 3, and (a(n)) and (b(n)) are increasing complementary sequences.at n=17A294551
• Expansion of e.g.f. Product_{p prime, k>=1} 1/(1 - x^(p^k))^(1/(p^k)).at n=8A318914
• Numbers k such that k![4] - 256 is prime, where k![4] = A007662(k) = quadruple factorial.at n=38A329177
• Moving the rightmost digit of a number to place it furthest to the left adds 18 to the number.at n=26A363823
• E.g.f. A(x) satisfies A(x) = exp( x/A(-x*A(x)^3)^2 ).at n=6A384810
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of e.g.f. B(x)^k, where B(x) is the e.g.f. of A384810.at n=34A384813