22350

Appears in sequences

• Product of a prime and the following number.at n=34A036690
• a(n) = prime(n)*prime(n+1) - prime(n).at n=34A037166
• a(n) = number of conjugacy classes in PSL_3(prime(n)).at n=34A124679
• a(n) = (4*n+1)*(4*n+2) = (4*n+2)!/(4*n)!.at n=37A157870
• Integer averages of first n nonprime numbers for some n.at n=8A160758
• Expansion of g.f. (1/2)*( a*(1+x)^n + b*(1-x)^(n+2)*LerchPhi(x, -n-1, 1) + c*2^(n+1)*(1-x)^(n+1)*LerchPhi(x, -n, 1/2) ), where a = 1, b = -1, and c = 1, read by rows.at n=24A168551
• Number of right triangles on a (n+1)X6 grid.at n=21A189810
• Principal diagonal of the convolution array A213778.at n=39A213779
• Numbers k such that 23*10^k - 7 is prime.at n=30A270738
• Number of odd-length columns in all bargraphs having semiperimeter n (n>=2).at n=9A273902
• Maximum number of 6 sphinx tile shapes in a sphinx tiled hexagon of order n.at n=24A291582
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1) + b(n-2) + b(n-3), where a(0) = 1, a(1) = 3, a(2) = 5, b(0) = 2, b(1) = 4, b(2) = 6, and (a(n)) and (b(n)) are increasing complementary sequences.at n=16A295357
• Number of maximal irredundant sets in the n-dipyramidal graph.at n=23A297711
• Oblong numbers that are the sum of 2 successive primes.at n=31A298077