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A352179 Numbers k such that decimal expansion of 14^k begins with 14. 1
1, 8, 49, 90, 97, 138, 179, 220, 227, 268, 309, 357, 398, 439, 446, 487, 528, 569, 576, 617, 658, 665, 706, 747, 788, 795, 836, 877, 925, 966, 1007, 1014, 1055, 1096, 1137, 1144, 1185, 1226, 1233, 1274, 1315, 1356, 1363, 1404, 1445, 1486, 1493, 1534, 1575, 1582 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

REFERENCES

E.-B. Escott, Query 2691, L'Intermédiaire des Mathématiciens, 11 (1904), 244-245.

LINKS

Table of n, a(n) for n=1..50.

PROG

(Python)

from itertools import islice

def A352179_gen(startvalue=1): # generator of terms >= startvalue

    k = max(startvalue, 1)

    k14 = 14**k

    while True:

        if str(k14)[:2] == '14':

            yield k

        k += 1

        k14 *= 14

A352179_list = list(islice(A352179_gen(), 10)) # Chai Wah Wu, Mar 08 2022

CROSSREFS

Sequence in context: A305226 A304771 A316514 * A304468 A272713 A316285

Adjacent sequences:  A352176 A352177 A352178 * A352180 A352181 A352182

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane, Mar 08 2022

STATUS

approved

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Last modified September 27 10:36 EDT 2022. Contains 357057 sequences. (Running on oeis4.)