A178912 Number of generalized mountain numbers (see A134853) with n digits.

9, 0, 240, 1380, 4578, 10794, 19494, 27912, 32195, 30085, 22748, 13820, 6656, 2486, 695, 137, 17, 1

Offset: 1

Author

Nathaniel Johnston, Dec 29 2010

Keywords

• base
• nonn
• fini
• full

Comments

The total number of generalized mountain numbers is 173247.

Examples

			a(18) = 1 because there is exactly one generalized mountain number with 18 digits: 123456789876543210
		

Crossrefs

Cf. A134853, A134941, A135417