|
| |
|
|
A367347
|
|
a(1) = 1; thereafter, a(n+1) = a(n) + x + 10*y, where x and y are respectively the first and last digits of a(n).
|
|
2
|
|
|
|
1, 12, 33, 66, 132, 153, 184, 225, 277, 349, 442, 466, 530, 535, 590, 595, 650, 656, 722, 749, 846, 914, 963, 1002, 1023, 1054, 1095, 1146, 1207, 1278, 1359, 1450, 1451, 1462, 1483, 1514, 1555, 1606, 1667, 1738, 1819, 1910, 1911, 1922, 1943, 1974, 2015, 2067, 2139, 2231, 2243, 2275, 2327, 2399
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,2
|
|
|
COMMENTS
|
This sequence and A367348 are simple models for the Commas sequence A121805.
|
|
|
LINKS
|
|
|
|
FORMULA
|
|
|
|
MATHEMATICA
|
NestList[#+First[IntegerDigits[#]]+10Mod[#, 10]&, 1, 100] (* Paolo Xausa, Nov 17 2023 *)
|
|
|
PROG
|
(Python)
from itertools import islice
def agen(): # generator of terms
an = 1
while True:
yield an
s = str(an)
an += int(s[0]) + 10*int(s[-1])
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn,base
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
