31301

Appears in sequences

• Powers of fifth root of 21 rounded up.at n=17A018176
• Number of partitions of n^2 into distinct squares.at n=45A030273
• a(n) = Sum_{k=0..n} (n!/k!)^2*binomial(n-1,k-1).at n=5A119399
• a(n) = prime(n) * prime(2*n-1).at n=29A219603
• a(n) is the least number m such that m = n^d_1 + n^d_2 + ... + n^d_k where d_k represents the k-th digit in the decimal expansion of m, or 0 if no such number exists.at n=24A236067
• G.f.: 1 / AGM((1 - 3*x)^2, (1 + x)^2).at n=12A245930
• Numbers m such that m equals a fixed number raised to the powers of the digits.at n=16A258484
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 998", based on the 5-celled von Neumann neighborhood.at n=7A273856