28449

Appears in sequences

• a(n) = n*(7*n^2 - 1)/6.at n=29A004126
• Number of column-strict plane partitions of n.at n=17A005986
• Expansion of 1/((1-x)*(1-5x)*(1-6x)*(1-8x)).at n=4A022111
• Octanacci numbers.at n=20A123526
• Partial sums of A050508.at n=37A178129
• a(1) = 1; a(n+1) = Sum_{k=1..n} lcm(a(k),a(n))/a(n).at n=28A287006
• Numbers k such that (7*10^k + 113)/3 is prime.at n=19A293591
• Numbers k such that sopfr(k) = tau(k)^2.at n=21A305026
• Expansion of the o.g.f. (1 + 8*x + 10*x^2 + 8*x^3 + x^4)/((1 - x)^4*(1 + x)^2).at n=28A342362
• Triangle read by rows: T(n,k) is the number of strongly connected oriented graphs on n unlabeled nodes with k arcs, n >= 1, k = 0..n*(n-1)/2.at n=53A350750
• Number of ASCII letter 'A' bytes that when compressed with zlib generate a new record longest compressed byte stream.at n=43A375585
• Numbers k such that k + A224787(k) is a square.at n=13A386640