78996

Appears in sequences

• Diagonal sums of exponential Riordan array [1+x*tan(x/2),x], A166353.at n=7A166355
• G.f. A(x) satisfies: 1 = ...(((((A(x) - x^2)^(1/2) - x^3)^(1/2) - x^4)^(1/2) - x^5)^(1/2) - x^6)^(1/2) -...- x^n)^(1/2) -..., an infinite series of nested square roots.at n=17A275691
• Number of n-digit left- or right-truncatable primes with no consecutive zero digits.at n=36A346662