27321

Appears in sequences

• Numbers k such that 35*2^k+1 is prime.at n=24A032367
• Triangle, read by rows, equal to the matrix inverse of A104416, where A104416(n,k) = A008275(k+1,n-k+1) (Stirling numbers of the first kind).at n=31A104417
• Triangle T(n,k) = binomial(n, k)*(3*binomial(n, k)^2 - binomial(n, k) - 1), read by rows.at n=30A144405
• Triangle T(n,k) = binomial(n, k)*(3*binomial(n, k)^2 - binomial(n, k) - 1), read by rows.at n=33A144405
• Triangle T(n, k) = binomial(n+1, k)*A142459(n+1, k+1)/(k+1), read by rows.at n=22A155493
• Triangle T(n, k) = binomial(n+1, k)*A142459(n+1, k+1)/(k+1), read by rows.at n=26A155493
• Second elementary symmetric function of the first n terms of (1,2,2,3,3,4,4,5,5...).at n=27A203298
• a(n) = (n+1)*(n^3+15*n^2+74*n+132)/12.at n=20A217947
• Sum of largest parts of all partitions of n plus n. Also, total number of parts in all partitions of n plus n.at n=27A225596
• Greatest integer whose square root is less than or equal to Sum_{j=0..n} sqrt(j).at n=39A338277
• The number of unit squares enclosed by the rectangular spiral of which the n-th side has length prime(n).at n=40A356465