A290876 A290865(n) -(n-1).

0, 0, 1, 4, 11, 25, 50, 91, 153, 241, 360, 525, 736, 1014, 1365, 1792, 2304, 2937, 3684, 4585, 5632, 6831, 8217, 9835, 11659, 13723, 16060, 18673, 21576, 24858, 28441, 32460, 36875, 41718, 47046, 52841, 59069, 65928, 73402, 81482, 90136

Offset: 1

Author

N. J. A. Sloane, Aug 13 2017

Keywords

• nonn

Comments

This is the number of regions in the configuration A290447(n) if we remove the baseline.

Crossrefs

Cf. A290447, A290865.