39063

Appears in sequences

• a(n) = (5^n + 1)/2.at n=7A034478
• The terms of A055237 (sums of two powers of 5) divided by 2.at n=28A073217
• Square array read by antidiagonals: T(n,k) = (k*(2*k+3)^n + 1)/(k+1).at n=43A083075
• Numbers less than the maximum possible determinant A085000(4)=40800 not occurring as determinant of a 4 X 4 matrix with elements 1..16.at n=8A088237
• Number of compositions of even natural numbers in 7 parts <= n.at n=4A191494
• Table T(n,k) = ceiling((1/2)*((k+1)^n+(1+(-1)^k)/2)) read by antidiagonals.at n=70A191687
• Dispersion of A016873, (5k+3), by antidiagonals.at n=28A191705
• Table T(m,n) = (5^m + 3^n)/2, m,n = 0,1,2,..., read by antidiagonals.at n=35A193770
• Numbers of the form (5^j + 7^k)/2, for j and k >= 0.at n=42A226792
• Numbers of the form (5^j + 9^k)/2, for j and k >= 0.at n=42A226794
• Permutation of natural numbers, the even bisection of A241909 incremented by one and halved; equally, a composition of A241909 and A048673: a(n) = A048673(A241909(n)).at n=33A243066
• Square array read by descending antidiagonals: T(n,k) = ((2^(n+1) + 1)^(k-1) + 1)/2.at n=28A266577
• Numbers z such that x^2 + y^7 = z^2 (with positive integers x and y) and gcd(x, y, z) = 1.at n=5A293693
• a(n) is the smallest positive integer of length (distance from origin) n in the Cayley graph of the integers generated by all powers of 5.at n=14A294566
• Least positive integer m relatively prime to n such that sigma(m*n) is a fourth power, where sigma(k) is the sum of the divisors of k.at n=7A334353
• G.f. A(x) satisfies A(x) = 1 / ((1 + x) * (1 - x * A(x^3))).at n=48A367693