22079

Properties

Appears in sequences

• Primes that remain prime through 3 iterations of function f(x) = 3x + 2.at n=18A023277
• Number of 5-ary rooted trees with n nodes and height at most 7.at n=14A036618
• B-trees of order 5 with n labeled leaves.at n=20A058521
• Numbers k such that the first k decimal digits < 6 of Pi, read as a base-6 number, form a prime.at n=9A065574
• Primes arising in A085042: a(n) = the n-th partial sum of A085042.at n=32A085043
• Numbers p such that p = (prime(n)+ prime(n+3))/2 is prime for prime indices n=2, 3, 5...at n=24A098039
• Primes p such that 2*p+1 and ((2*p+1)^2 + 1)/2 = p^2 + (p+1)^2 are primes.at n=27A098717
• Primes p such that googol - p is prime.at n=12A108252
• Numbers k such that (13^k - 5^k)/8 is prime.at n=5A128349
• Primes congruent to 58 mod 61.at n=37A142856
• Prime numbers p such that p - 1 is the fourth a-figurate number and nineteenth b-figurate number for some a and b.at n=21A144327
• Sophie Germain primes in A154939.at n=22A154941
• Primes p such that (p-1)*p*(p+1)-p-2 and (p-1)*p*(p+1)+p+2 are primes.at n=25A154942
• Cyclops Sophie-Germain primes.at n=11A183058
• Number of distinct sums of subsets of the first n squares {1,4,9,...,n^2}.at n=39A208531
• Primes of the form p^2 + q^2 + 21, where p and q are consecutive primes.at n=15A229075
• Greatest prime factor of n^7+1.at n=12A240550
• Partial sums of A255283.at n=52A255428
• Primes of the form 8*n^2+8*n+31.at n=39A289839
• Number of integer partitions of n with origin-to-boundary graph-distance equal to 4.at n=64A384562