A067113 Let N = 0.149162536496481100121... = A001191, the concatenation of the squares. Then a(n) = sum of first n digits of N.

1, 5, 14, 15, 21, 23, 28, 31, 37, 41, 50, 56, 60, 68, 69, 70, 70, 70, 71, 73, 74, 75, 79, 83, 84, 90, 99, 100, 109, 115, 117, 119, 124, 126, 131, 137, 139, 147, 156, 159, 161, 165, 168, 174, 175, 179, 179, 179, 183, 187, 188, 192, 200, 204, 209, 211, 220, 225, 232

Offset

1,2

Links

Table of n, a(n) for n=1..59.

Formula

a(n) ~ 4.5n (since 0.149162536... = A001191 is 10-normal).

Example

a(5) = 1+4+9+1+6 = 21.

Crossrefs

Sequence in context: A174657 A231665 A160709 * A101774 A222560 A222561

Adjacent sequences: A067110 A067111 A067112 * A067114 A067115 A067116

Keyword

base,easy,nonn

Author

Amarnath Murthy, Jan 08 2002

Extensions

Corrected and extended by Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 19 2003

Asymptotic formula from Charles R Greathouse IV, Oct 04 2008

Status

approved