|
Search: id:A103460
|
|
| |
|
| 1, 10, 82, 730, 6562, 59050, 531442, 4782970, 43046722, 387420490, 3486784402, 31381059610, 282429536482, 2541865828330, 22876792454962, 205891132094650, 1853020188851842, 16677181699666570, 150094635296999122
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
COMMENT
|
a(n)^3 is palindromic in base 9 (1,1331,1030301,1003003001,....)
|
|
LINKS
|
P. De Geest, World!Of Numbers
|
|
FORMULA
|
G.f.: (1-9x^2)/((1-x)(1-9x)); a(n)=sum{k=0..n, binomial(n, k)*0^(k(n-k))*9^k}.
a(n)=A062396(n), n>0. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 28 2008]
|
|
CROSSREFS
|
Cf. A046233.
Sequence in context: A076288 A154246 A037549 this_sequence A026954 A116879 A154340
Adjacent sequences: A103457 A103458 A103459 this_sequence A103461 A103462 A103463
|
|
KEYWORD
|
easy,nonn
|
|
AUTHOR
|
Paul Barry (pbarry(AT)wit.ie), Feb 07 2005
|
|
|
Search completed in 0.002 seconds
|
