44249

Properties

Appears in sequences

• Second term p(m) of strong prime sextets: p(m)-p(m-1) > p(m+1)-p(m) > p(m+2)-p(m+1) > p(m+3)-p(m+2) > p(m+4)-p(m+3).at n=14A054814
• A list of equal temperaments (equal divisions of the octave) whose nearest scale steps are closer and closer approximations to the 7 pairs of complementary target ratios needed to express the 12 unsymmetrical steps of the untempered (Just Intonation) scale known as the Duodene: 3/2 and 4/3, 5/4 and 8/5, 6/5 and 5/3, 9/8 and 16/9, 10/9 and 9/5, 16/15 and 15/8 and 45/32 and 64/45.at n=34A061920
• Penta-Primes. Prime Numbers n as a Sum of 5 consecutive prime numbers (four twin primes and single prime number in between) are primes.at n=11A138397
• Primes of the form 2*n^2 + 62*n + 29.at n=30A243891
• Prime numbers such that, in base 10, all their proper prefixes and suffixes represent composites.at n=35A254754
• Initial primes of 5 consecutive primes with consecutive gaps 8,6,4,2.at n=5A289907
• Boustrophedon primes: write the numbers 0, 1, 2, 3, ... in a triangle on a square grid in the boustrophedon manner, ending a row when a prime is reached; sequence lists primes that appear in the zeroth column.at n=11A330339
• Union of 2, A282178, and A330339.at n=44A330554
• Primes p such that p + 8, p + 14, p + 18 and p + 20 are also primes.at n=14A385035
• Primes having only {2, 4, 9} as digits.at n=18A385785
• Primes having only {2, 4, 5, 9} as digits.at n=32A386154
• Primes having only {2, 4, 8, 9} as digits.at n=38A386159
• Prime numbersat n=4604