|
| |
| |
|
|
|
1, 23, 230, 1682, 10543, 60657, 331612, 1756340, 9116141, 46702427, 237231970, 1198382694, 6031771195, 30287995733, 151856096504, 760614930344, 3807336276505, 19050241098975, 95294209168414, 476607030432890
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 3,2
|
|
|
REFERENCES
| P. A. MacMahon, The divisors of numbers, Proc. London Math. Soc., (2) 19 (1920), 305-340; Coll. Papers II, pp. 267-302.
|
|
|
FORMULA
| 5^(n-1) - n*3^(n-1) + n(n-1)/2. - R. Stephan, May 08 2004
|
|
|
CROSSREFS
| Sequence in context: A124336 A010829 A022715 * A028824 A096983 A140572
Adjacent sequences: A060186 A060187 A060188 * A060190 A060191 A060192
|
|
|
KEYWORD
| nonn,easy
|
|
|
AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Mar 20 2001
|
|
|
EXTENSIONS
| More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Mar 20 2001
|
| |
|
|
