login
A037566
Base 9 digits are, in order, the first n terms of the periodic sequence with initial period 2,2,1.
0
2, 20, 181, 1631, 14681, 132130, 1189172, 10702550, 96322951, 866906561, 7802159051, 70219431460, 631974883142, 5687773948280, 51189965534521, 460709689810691, 4146387208296221
OFFSET
1,1
FORMULA
G.f.: x*(2+2*x+x^2) / ( (x-1)*(9*x-1)*(1+x+x^2) ). - R. J. Mathar, Apr 30 2015
CROSSREFS
Sequence in context: A105493 A067641 A279462 * A125857 A226312 A171076
KEYWORD
nonn,base,easy
STATUS
approved