47005

Appears in sequences

• a(n) = ceiling(10000*log_2(n)).at n=25A004270
• Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 1001-1111-1001 pattern in any orientation.at n=22A146929
• Numbers n such that prime(n) contains a substring of all the prime digits in order, i.e., "2357".at n=23A295708
• G.f. A(x) satisfies: A(x) = 1 - Sum_{k=1..4} (x * A(x))^k.at n=19A337513
• Number of distinct ways of expressing n using only addition, multiplication (with all factors greater than 1), necessary parentheses, and the number 1.at n=45A373446