A178161 Number of n-digit Type-2 Trott-like Constants (see A178160 for definition).

9, 63, 296, 693, 4117, 14071, 79586, 232069, 1356627, 4222935, 24394044, 73910079, 429075206, 1314629842

Offset

1,1

Comments

The values given as a(4), a(8), and a(11) each include exactly one type-2 Trott-like constant that cannot be extended to additional digits (see A178164). All the rest, including every constant counted in each of the other terms, can be extended by an arbitrary number of additional digits.

Links

Table of n, a(n) for n=1..14.

Example

There are 63 type-2 Trott-like constants that have exactly 2 digits after the decimal point (0.11 ... 0.16, 0.21 ... 0.27, 0.31 ... 0.37, 0.42 ... 0.48, 0.52 ... 0.58, 0.62 ... 0.68, 0.72 ... 0.78, 0.82 ... 0.88, and 0.92 ... 0.99), so a(2) = 63.

Crossrefs

Cf. A091694, A113307, A178160.

Sequence in context: A269641 A269410 A379683 * A015669 A202982 A073378

Adjacent sequences: A178158 A178159 A178160 * A178162 A178163 A178164

Keyword

base,nonn

Author

Jon E. Schoenfield, May 21 2010

Status

approved