OFFSET
1,2
COMMENTS
Cf. A011760 (Elevator buttons in U.S.A).
Cf. A023806 (all digits in base 12 are different).
Complement of A008595. - Reinhard Zumkeller, Apr 26 2011
LINKS
Eric Weisstein's World of Mathematics, Triskaidekaphobia
Index entries for linear recurrences with constant coefficients, signature (1,0,0,0,0,0,0,0,0,0,0,1,-1).
FORMULA
a(n) = n+floor((2n-1)/24) = n+quotient(2n-1, 24)
MATHEMATICA
Table[n+Quotient[2n-1, 24], {n, 1, 85}]; (* or *)Table[n+Floor[(2n-1)/24], {n, 1, 85}]
PROG
(Sage) [i for i in range(80) if not i%13] # Zerinvary Lajos, Apr 21 2009
(PARI) a(n)=(26*n-1)\24 \\ Charles R Greathouse IV, Jun 08 2015
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Zak Seidov, Jan 18 2006
STATUS
approved