19525

Appears in sequences

• Powers of rooted tree enumerator.at n=21A000439
• Centered dodecahedral numbers.at n=12A005904
• Sums of 5 distinct powers of 5.at n=20A038477
• 1/n times A104631(n), the coefficient of x^(2n+1) in the expansion of (1+x+x^2+x^3+x^4)^n.at n=8A104632
• Numbers k such that 6*p(k)*p(k+1)*p(k+2)*p(k+3)*p(k+4)-1 and 6*p(k)*p(k+1)*p(k+2)*p(k+3)*p(k+4)+1 are twin primes with p(h) = h-th prime.at n=38A129310
• Numerator of Euler(n, 1/27).at n=3A157091
• a(n) = 25*(5^n - 1)/4.at n=5A168571
• a(1) = 1, and for each k >=2, a(k) is the smallest number n such that n/sin(n) > a(k)/sin(a(k)), so that a(1)/sin(a(1)) > a(2)/sin(a(2)) > ... > a(k)/sin(a(k)) > ...at n=41A172445
• Column 3 of array in A226513.at n=24A226514
• Numbers n with property that A062234(n) = A062234(n+1) = A062234(n+2) = A062234(n+3).at n=13A257892
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 451", based on the 5-celled von Neumann neighborhood.at n=31A272258
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 566", based on the 5-celled von Neumann neighborhood.at n=14A283063
• Index where prime(n) appears as a term in A379248.at n=52A379290
• Triangle T(n,k), n >= 0, 0 <= k <= n, read by rows, where T(n,k) = 3^(n-k) * T(n-1,k-1) + 4^k * T(n-1,k) with T(n,k) = n^k if n*k=0.at n=17A383755
• Triangle T(n,k), n >= 0, 0 <= k <= n, read by rows, where T(n,k) = 3^(n-k) * T(n-1,k-1) + 4^k * T(n-1,k) with T(n,k) = n^k if n*k=0.at n=18A383755
• Expansion of 1/Product_{k=0..2} (1 - 3^k * 4^(2-k) * x).at n=3A383756
• Expansion of 1/Product_{k=0..3} (1 - 3^k * 4^(3-k) * x).at n=2A383757
• Indices k such that the determinant of the 3 X 3 Hankel matrix of consecutive primes starting at prime(k) is 0.at n=25A392523