|
Search: id:A138883
|
|
|
| A138883 |
|
Number of digits in n-th even superperfect number A061652(n). |
|
+0
1
|
|
| 1, 1, 2, 2, 4, 5, 6, 10, 19, 27, 32, 38, 157, 183, 385, 663, 687, 969, 1280, 1332, 2917, 2993, 3376, 6002, 6533, 6987, 13395, 25962, 33265, 39751, 65050, 227831, 258715, 378632, 420921, 895932, 909525, 2098960
(list; graph; listen)
|
|
|
OFFSET
|
1,3
|
|
|
COMMENT
|
Also, number of digits in n-th superperfect number A019279(n), if there are no odd superperfect numbers.
|
|
FORMULA
|
a(n)=A055642(A061652(n)). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 22 2008
|
|
CROSSREFS
|
Cf. A019279, A028335, A061193, A061652.
Sequence in context: A121269 A056219 A085140 this_sequence A107849 A053036 A067957
Adjacent sequences: A138880 A138881 A138882 this_sequence A138884 A138885 A138886
|
|
KEYWORD
|
base,nonn
|
|
AUTHOR
|
Omar E. Pol (info(AT)polprimos.com), Apr 08 2008
|
|
EXTENSIONS
|
More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 22 2008
|
|
|
Search completed in 0.002 seconds
|
