OFFSET
1,1
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
KEYWORD
nonn,base
AUTHOR
Colin Barker, May 22 2015
STATUS
approved