login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Analog of A121805, but starting with 5.
10

%I #22 Nov 18 2023 13:13:00

%S 5,61,78,159,251,263,295,348,432,456,521,536,602,628,715,772,799,897,

%T 976,1037,1108,1189,1280,1281,1292,1313,1344,1385,1436,1497,1568,1649,

%U 1740,1741,1752,1773,1804,1845,1896,1957,2029,2121,2133,2165,2217,2289,2381,2393,2425

%N Analog of A121805, but starting with 5.

%C This sequence is finite, with last term a(19706) = 999945.

%H N. J. A. Sloane, <a href="/A367337/b367337.txt">Table of n, a(n) for n = 1..19706</a>

%o (Python)

%o from itertools import islice

%o def agen(start=5): # generator of terms

%o an, y = start, 1

%o while y < 10:

%o yield an

%o an, y = an + 10*(an%10), 1

%o while y < 10:

%o if str(an+y)[0] == str(y):

%o an += y

%o break

%o y += 1

%o print(list(agen())) # _Michael S. Branicky_, Nov 18 2023

%Y Comma sequences in base 10, starting with 1, 2, 4, 5, 6, 7, 8, 9, 10 are A121805, A139284, A366492, A367337, A367350, A367351, A367352, A367353, A367354. Starting with 3 is trivial, and those starting with 11, 12, 13 are essentially duplicates.

%Y Cf. A330128, A330129.

%K nonn,base,fini,full

%O 1,1

%A _N. J. A. Sloane_, Nov 14 2023