The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A299988 Lexicographic first sequence of nonnegative integers such that a(n) + a(n+1) has a digit 8, and no term occurs twice. 20
 0, 8, 10, 18, 20, 28, 30, 38, 40, 41, 7, 1, 17, 11, 27, 21, 37, 31, 47, 33, 5, 3, 15, 13, 25, 23, 35, 43, 39, 9, 19, 29, 49, 32, 6, 2, 16, 12, 26, 22, 36, 42, 44, 4, 14, 24, 34, 46, 52, 56, 62, 66, 72, 76, 82, 86, 92, 88, 50, 48, 60, 58, 70, 68, 80, 78, 90, 91, 57, 51, 67, 61, 77, 71, 87, 81, 97, 83, 45, 53, 55, 63, 65, 73, 75, 93, 85, 95, 89, 59, 69 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS A permutation of the nonnegative integers. LINKS PROG (PARI) a(n, f=1, d=8, a=0, u=[a])={for(n=1, n, f&&if(f==1, print1(a", "), write(f, n-1, " "a)); for(k=u[1]+1, oo, setsearch(u, k)&&next; setsearch(Set(digits(a+k)), d)&&(a=k)&&break); u=setunion(u, [a]); u[2]==u[1]+1&&u=u[^1]); a} CROSSREFS Cf. A299978 (analog with positive terms), A299957 (analog with digit 1), A299970, A299982..A299987, A299969 (digit 0, 2..7, 9). Sequence in context: A059094 A302166 A287270 * A143617 A015732 A179474 Adjacent sequences:  A299985 A299986 A299987 * A299989 A299990 A299991 KEYWORD nonn,base AUTHOR M. F. Hasler and Eric Angelini, Feb 22 2018 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified March 28 07:59 EDT 2020. Contains 333079 sequences. (Running on oeis4.)