A330419 a(n) is the number of terms in A330418 with exactly n digits.

1, 0, 1, 2, 9, 22, 109, 390, 2249, 10006, 53540, 207218, 967733, 3587686, 14902072, 56388126, 220066307, 867528322, 3324603126, 13719108983

Offset

1,4

Links

Table of n, a(n) for n=1..20.

Crossrefs

Cf. A330367, A330418.

Sequence in context: A026589 A319792 A091002 * A025176 A032315 A032224

Adjacent sequences: A330416 A330417 A330418 * A330420 A330421 A330422

Keyword

nonn,base,more

Author

Lars Blomberg, Dec 14 2019

Status

approved