24107

Properties

Appears in sequences

• Primes which when added to their reversals are squares.at n=8A059799
• Starting positions of strings of three 9's in the decimal expansion of Pi.at n=28A083642
• Primes p such that 2^j+p^j are primes for j=0,1,2,8.at n=4A094488
• Lesser prime in pair prime(k) +/- k for some k.at n=36A107636
• Times in hours, minutes and seconds (to the nearest second) at which the hour and minute hands of an analog clock, if interchanged, continue to indicate some other albeit accurate times, over a complete 12-hour sweep for the slower hand. Leading zeros omitted.at n=32A121577
• a(1)=1. a(n) = Sum_{1<=k<n, gcd(k,n(n+1))=1} a(k).at n=42A125596
• Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 10000-11100-00111-00001 pattern in any orientation.at n=20A147380
• Beginnings of maximal chains of primes with four members (three links).at n=10A152867
• Square root of A003462, rounded up.at n=18A160393
• Primes p such that q*p +- (p mod q) are primes, for q=8.at n=28A178416
• The Riemann primes of the psi type and index 1.at n=35A197185
• Indices of primes in A214831.at n=27A244930
• Primes p such that p - 2^2, p - 4^2 and p - 6^2 are all positive primes.at n=35A246873
• Primes p such that p - m^2, m = 2, 4, 6, 8, are all (positive) primes.at n=17A246874
• Primes p such that all of p - m^2, m = 2, 4, 6, 8, 10, are (positive) primes.at n=8A247941
• Subtract 1 from the terms of A256407.at n=41A256410
• Prime-Indexed Primes (PIPs) k such that the sum of all PIPs <= k is a prime.at n=39A261148
• Indices of primes followed by a gap (distance to next larger prime) of 44.at n=25A320720
• a(n) = number of nonnegative integers that are not the sum of {2 squares, a nonnegative 5th power, and a nonnegative n-th power}.at n=26A332664
• Prime numbers of the form (i+1)*A352185(i) + A352186(i) for some i > 0.at n=15A352338