A258167 Indices of the start of 9 successive distinct digits in the decimal expansion of e (2.718281828...).

231, 729, 818, 911, 1730, 1731, 2031, 2032, 2033, 2788, 3420, 3682, 3683, 3685, 3796, 4265, 4486, 4655, 4656, 4657, 4692, 5206, 5207, 5445, 5446, 5783, 5836, 5837, 5840, 6051, 6063, 8758, 9756, 9757, 9954, 9979, 10003, 10006, 10123, 10303, 10321, 10416

Offset

1,1

Links

Table of n, a(n) for n=1..42.

Example

231 is in the sequence because the 9 digits starting at the 231st digit of e are 8, 4, 1, 6, 7, 5, 0, 9, 2.

Prog

(PARI)
default(realprecision, 20080);
infix(v, a, b) = {my(i, s=[]); for(i=a, b, s=concat(s, v[i])); s}
pane(m) = {
  L=List(); p=exp(1); for(n=1, 20000, d=floor(p); p=(p-d)*10; listput(L, d)); v=Vec(L);
  s=[]; for(k=1, #v-m+1, in=infix(v, k, k+m-1); if(#in==#vecsort(in, , 8), s=concat(s, k))); s
}
pane(9)

Crossrefs

Cf. A001113, A258166.

Sequence in context: A324319 A360214 A246886 * A287472 A350368 A183672

Adjacent sequences: A258164 A258165 A258166 * A258168 A258169 A258170

Keyword

nonn,base

Author

Colin Barker, May 22 2015

Status

approved