54013

Properties

Appears in sequences

• A proximate-prime polynomial sequence generated by 2*n^2 - 2*n + 53089.at n=21A155557
• Primes p = prime(k) of form 13//r, s//13 or t//13//u and sod(p) = sod(k).at n=28A169645
• Least magic constant of magic squares using Smith numbers.at n=13A170928
• Primes p containing the string "13" and sum of digits sod(p) = 13.at n=36A175017
• Number of n X 2 0,1 arrays indicating 2 X 2 subblocks of some larger (n+1) X 3 binary array having determinant equal to one, with rows and columns of the latter in nondecreasing lexicographic order.at n=33A227637
• Arises from color-symmetrized counting of tensor invariants.at n=6A232211
• Positions of pandigital 10-digit numbers after the decimal point in the decimal expansion of Pi.at n=22A280183
• a(n) = Sum_{k=1..n} mu(k)*k^4.at n=14A336278
• a(n) = Sum_{k=1..n} mu(k)*k^4.at n=15A336278
• Prime numbersat n=5503