26177

Properties

Appears in sequences

• arcsin(arctan(x)+arcsin(x))=2*x+7/3!*x^3+281/5!*x^5+26177/7!*x^7...at n=3A012987
• Numbers k such that the continued fraction for sqrt(k) has period 73.at n=20A020412
• Second term of balanced prime quartets: p(m)-p(m-1) = p(m+1)-p(m) = p(m+2)-p(m+1).at n=16A054801
• Primes p such that x^48 = 2 has no solution mod p, but x^24 = 2 has a solution mod p.at n=31A059669
• Primes from merging of 5 successive digits in decimal expansion of (Pi^2).at n=18A104928
• Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1000-1000-1100-0111 pattern in any orientation.at n=16A147105
• Numbers k such that k and k+6 are both balanced primes.at n=16A173892
• Expansion of x*(1+2*x+8*x^2+4*x^3+3*x^4) / ( (1+x)^2*(x-1)^4 ).at n=32A178947
• Number of singular 2 X 2 matrices having all elements in {-n,...,n}.at n=24A209981
• Number of 2 X 2 matrices having all terms in {-n,...,0,...,n} and nonnegative determinant.at n=7A211147
• Numbers n such that (13^n - 4^n)/9 is prime.at n=7A224691
• Primes p with same last two digits as k, where prime(k) = p.at n=30A232102
• Primes of form n^2 + 256.at n=28A256776
• Partial sums of A299255.at n=24A299261
• Number of convergent binary relations on [n] (A365534) that converge to an equivalence relation (A000110).at n=4A366218
• Prime numbersat n=2877