22253

Appears in sequences

• Numbers k such that L(2*k + 1) is prime, where L(m) is a Lucas number.at n=35A117522
• G.f. is the polynomial (1-x^3) * (1-x^6) * (1-x^9) * (1-x^12) * (1-x^15) * (1-x^18) * (1-x^21) * (1-x^24) * (1-x^27) * (1-x^30) / (1-x)^10.at n=8A162617
• Numbers k for which 6k+1, 24k+5, 432k^2+72k-1, and 432k^2+90k-1 are all prime.at n=25A175513
• a(n) = (4*n+9)*n^2.at n=17A258618
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n) - 1, where a(0) = 1, a(1) = 4, b(0) = 2, b(1) = 3, b(2) = 5, and (a(n)) and (b(n)) are increasing complementary sequences.at n=17A295964
• Number of set partitions of [n] such that the maximal absolute difference between the least elements of consecutive blocks equals ten.at n=3A322883
• Terms of A349937 that are not divisible by 3: numbers k > 1 not divisible by 2 or 3 such that A309906(k-1) < A309906(k) > A309906(k+1).at n=10A349941
• Smallest positive integer whose smallest coprime divisor shift is n.at n=29A366219
• Numbers k such that A075255(k) is the square of a prime.at n=18A386954