A071180 Number of numbers m with n < m <= n^2 containing n in decimal representation.

0, 0, 0, 1, 2, 3, 4, 5, 7, 1, 10, 11, 11, 11, 12, 12, 12, 13, 13, 13, 14, 13, 15, 15, 16, 16, 17, 17, 18, 18, 19, 19, 19, 21, 21, 22, 23, 34, 34, 35, 36, 37, 38, 36, 39, 40, 41, 42, 43, 45, 55, 56, 57, 58, 56, 60, 61, 63, 64, 66, 76, 77, 79, 80, 81, 78, 84

Offset

1,5

Links

Table of n, a(n) for n=1..67.

Example

n=21: numbers >21 and <=441=21^2 containing "21": {121, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 221, 321, 421} having size 14, therefore a(21)=14.

Crossrefs

Sequence in context: A067570 A133303 A152302 * A031225 A085729 A331269

Adjacent sequences: A071177 A071178 A071179 * A071181 A071182 A071183

Keyword

nonn,base

Author

Reinhard Zumkeller, Jun 10 2002

Status

approved