-6620

Appears in sequences

• Expansion of e.g.f. cos(log(1+x)).at n=8A003703
• Real part of Product_{k = 0..n} (1 + k*i), i = sqrt(-1).at n=7A105750
• Define u(n) as in A220448; then a(1)=1, thereafter a(n) = u(n)*a(n-1).at n=6A220449
• Real part of Product_{k=0..n} (i-k), where i = sqrt(-1).at n=7A242651
• Square array T(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of e.g.f. cos( sqrt(k) * log(1+x) ).at n=53A357720