A261439 Sum of the digits of n exceeds the sum of the digits of n^4.

124499, 1244990, 12449900, 124499000, 594959999, 1244990000, 1349969999, 5949599990, 12449900000, 13499699990, 59495999900

Offset

1,1

Comments

A comment by M. F. Hasler in A122484 shows that there are infinitely many terms not divisible by 10.

Links

Table of n, a(n) for n=1..11.

Prog

(PARI) is(n)=sumdigits(n)>sumdigits(n^4) \\ Charles R Greathouse IV, Aug 18 2015
(Python)
from itertools import count, islice
def A261439_gen(startvalue=1): # generator of terms >= startvalue
    return filter(lambda n: sum(int(d) for d in str(n)) > sum(int(d) for d in str(n**4)), count(max(startvalue, 1)))
A261439_list = list(islice(A261439_gen(), 3)) # Chai Wah Wu, Oct 20 2023

Crossrefs

A122484 is the main sequence.

Cf. A064209, A064399, A064210, A007953.

Sequence in context: A061734 A263081 A030639 * A182658 A282919 A100406

Adjacent sequences: A261436 A261437 A261438 * A261440 A261441 A261442

Keyword

nonn,base,more

Author

Jeppe Stig Nielsen, Aug 18 2015

Status

approved