A372074 - OEIS

A372074

a(1) = 1; thereafter a(n+1) is obtained by appending the digit-sum of a(n) to a(n).

1, 11, 112, 1124, 11248, 1124816, 112481623, 11248162328, 1124816232838, 112481623283849, 11248162328384962, 1124816232838496270, 112481623283849627077, 11248162328384962707791, 11248162328384962707791101, 11248162328384962707791101103, 11248162328384962707791101103107, 11248162328384962707791101103107115

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Paolo Xausa, Table of n, a(n) for n = 1..270

MAPLE

s:=1; j1:=[s];

f:=proc(n) local t1, t2;

t1:=digsum(n);

t2:=length(t1); n*10^t2 + t1; end;

for n from 1 to 24 do s:=f(s); j1:=[op(j1), s]; od:

j1;