|
| |
|
|
A164743
|
|
Sum of digits of 3*A000045.
|
|
0
| |
|
|
3, 3, 6, 9, 6, 6, 3, 9, 3, 3, 6, 9, 6, 6, 3, 9, 3, 3, 6, 9, 6, 6, 3, 9, 3, 3, 6, 9, 6, 6, 3, 9
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
COMMENTS
| Period 8.
|
|
|
FORMULA
| a(n+1) = sum of digits of a(n) + a(n-1).
a(n)=(1/224)*{-123*(n mod 8)+129*[(n+1) mod 8]+45*[(n+2) mod 8]+129*[(n+3) mod 8]-39*[(n+4) mod 8]-39*[(n+5) mod 8]+45*[(n+6) mod 8]+213*[(n+7) mod 8]}, with n>=1 [From Paolo P. Lava (paoloplava(AT)gmail.com), Dec 03 2009]
|
|
|
CROSSREFS
| Cf. A049341,A000045,A030132,A082115
Sequence in context: A026804 A205970 A104715 * A110769 A093445 A098358
Adjacent sequences: A164740 A164741 A164742 * A164744 A164745 A164746
|
|
|
KEYWORD
| nonn,base,easy
|
|
|
AUTHOR
| M. Dols (markdols99(AT)yahoo.com), Aug 24 2009
|
| |
|
|
