31584

Appears in sequences

• Fibonacci sequence beginning 0, 32.at n=16A022366
• Generalized sum of divisors function: third diagonal of A060047.at n=39A060046
• Numbers k such that 2k-1 divides 2^k-1.at n=22A081856
• Triangle T, read by rows, where row n equals row (n-1) of matrix power T^(n(n+1)/2) concatenated with a trailing '1', for n>0, with T(0,0) = 1.at n=31A126465
• Numbers k such that k^6 + 82991 is prime.at n=5A126893
• Number of ternary words of length n in which all digits 0..2 occur in every subword of 4 consecutive digits.at n=15A248959
• Number of integers in n-th generation of tree T(-1/3) defined in Comments.at n=34A274148
• Diagonal of the rational function 1/(1 - x - y - z + x*y + x*z - y*z).at n=5A274665
• Expansion of 1/(1 + Sum_{k>=1} k^3 * x^k).at n=12A316088
• Numbers m such that m*(m-tau(m))/sigma(m) is an integer h where k-tau(k) is the number of nondivisors of k (A049820) and sigma(k) is the sum of the divisors of k (A000203).at n=44A325020
• Numbers m such that 20*m + 1, 80*m + 1, 100*m + 1, and 200*m + 1 are all primes.at n=36A372186
• Triangle T(n, k) read by rows: Row n gives the coefficients of the even powers in Product_{t=1..n}(2*x - (2*t - 1))*Product_{t=1..n}(2*x + (2*t - 1)).at n=12A380570