|
| |
|
|
A061911
|
|
Square roots of the sum of the digits of n in the case that this is a perfect square.
|
|
2
| |
|
|
1, 2, 3, 3, 3, 1, 2, 3, 4, 4, 3, 3, 2, 3, 4, 4, 3, 4, 3, 4, 3, 3, 3, 4, 4, 3, 5, 4, 5, 5, 4, 5, 3, 5, 4, 1, 2, 3, 4, 4, 3, 2, 3, 4, 5, 3, 4, 5, 4, 4, 4, 4, 4, 3, 5, 5, 5, 4, 5, 3, 5, 4, 5, 5, 2, 3, 4, 4, 3, 4, 5, 4, 5, 4, 4, 5, 4, 4, 4, 3, 5, 5, 6, 4, 5, 5, 5, 5, 5, 5, 3, 4, 4, 4, 5, 3, 4, 3, 5, 4, 5, 4, 5, 4, 3
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,2
|
|
|
EXAMPLE
| 6^2 = 36 and 3+6 = 9 is a square, thus 3 is in the sequence. 13^2 = 169 and 1+6+9 = 16 is a square, thus 4 is in the sequence.
|
|
|
MAPLE
| readlib(issqr): f := []: for n from 1 to 200 do if issqr(convert(convert(n^2, base, 10), `+`)) then f := [op(f), sqrt(convert(convert(n^2, base, 10), `+`))] fi; od; f;
|
|
|
CROSSREFS
| Cf. A007953, A004159, A061909, A061910, A061912.
Sequence in context: A118925 A171576 A016738 * A082239 A062745 A140733
Adjacent sequences: A061908 A061909 A061910 * A061912 A061913 A061914
|
|
|
KEYWORD
| nonn,base
|
|
|
AUTHOR
| Asher Auel (asher.auel(AT)reed.edu), May 17 2001
|
| |
|
|
