48060

Appears in sequences

• Number of step shifted (decimated) sequences using exactly six different symbols.at n=7A056380
• Number of primitive (aperiodic) step shifted (decimated) sequences using exactly six different symbols.at n=7A056390
• One fifth of product plus sum of five consecutive nonnegative numbers.at n=10A166942
• G.f. satisfies A(x)/A(x^2) = (1 + 9x + 9x^2 + 9x^3 + ...).at n=20A176201
• a(n) = 2/15 * (32*n^5 + 80*n^4 + 40*n^3 - 20*n^2 + 3*n).at n=5A212669
• Let p = n-th prime == 3 mod 8; a(n) = sum of quadratic nonresidues mod p that are > p/2.at n=24A282725
• Exponential (2,4)-perfect numbers: numbers m such that esigma(esigma(m)) = 4m, where esigma(m) is the sum of exponential divisors of m (A051377).at n=22A328133
• Starts of runs of 3 consecutive lazy-Fibonacci-Niven numbers (A328212).at n=2A328214
• Expansion of e.g.f. Product_{k>0} 1/(1 - tan(x)^k / k).at n=7A335636
• a(n) = Sum_{x_1|n, x_2|n, x_3|n, x_4|n, x_5|n} gcd(x_1,x_2,x_3,x_4,x_5).at n=39A344139