A366492 Analog of A121805, but starting with 4.

4, 48, 129, 221, 233, 265, 318, 402, 426, 490, 494, 539, 635, 691, 708, 795, 853, 891, 910, 919, 1010, 1011, 1022, 1043, 1074, 1115, 1166, 1227, 1298, 1379, 1470, 1471, 1482, 1503, 1534, 1575, 1626, 1687, 1758, 1839, 1930, 1931, 1942, 1963, 1994, 2036, 2098, 2180, 2182

Offset

1,1

Comments

If instead we start with 3, the sequence is the two-term sequence [3, 36].

The present sequence is finite, with last term a(199900) = 9999945.

Links

N. J. A. Sloane, Table of n, a(n) for n = 1..20000

Prog

(Python)
from itertools import islice
def agen(start=4): # generator of terms
    an, y = start, 1
    while y < 10:
        yield an
        an, y = an + 10*(an%10), 1
        while y < 10:
            if str(an+y)[0] == str(y):
                an += y
                break
            y += 1
print(list(islice(agen(), 50))) # Michael S. Branicky, Nov 18 2023

Crossrefs

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.

Cf. A330128, A330129.

Sequence in context: A362402 A373435 A048608 * A275033 A192418 A162673

Adjacent sequences: A366489 A366490 A366491 * A366493 A366494 A366495

Keyword

nonn,base,fini

Author

N. J. A. Sloane, Nov 14 2023

Status

approved