127765

Appears in sequences

• a(n) = n^4 - (n-1)^4 + (n-2)^4 - ... 0^4.at n=22A062392
• Irregular triangle read by rows: T(n,k) is the number of sensed 3-connected planar maps with n >= 4 faces and k >= 4 vertices.at n=57A239893