137085

Appears in sequences

• Consider recurrence b(0) = (2n+1)/2, b(n) = b(n-1)*floor(b(n-1)); sequence gives first integer reached.at n=17A057016
• a(n) = floor(C(n+8,8)/C(n+2,2)).at n=32A084631
• Fifth column (m=4) of (1,6)-Pascal triangle A096956.at n=36A096958
• Array read by antidiagonals: T(n,k) is the number of noncrossing k-gonal cacti with n polygons up to rotation.at n=63A361236
• Number of nonequivalent noncrossing triangular cacti with n triangles up to rotation.at n=8A361237