A354861 Base-n digit sum of A002034(n)!.

1, 2, 3, 8, 1, 12, 3, 16, 3, 30, 2, 48, 22, 8, 15, 80, 6, 126, 6, 20, 63, 198, 1, 24, 50, 50, 18, 364, 4, 360, 20, 64, 165, 8, 20, 432, 182, 92, 3, 520, 38, 504, 72, 16, 225, 690, 15, 96, 56, 250, 105, 988, 42, 108, 35, 280, 399, 1334, 2, 1500, 524, 18, 63, 128, 105, 1650, 227, 340, 3, 2030, 10, 2160, 853, 62

Offset

2,2

Links

Table of n, a(n) for n=2..75.

Prog

(PARI) \\ define the function a002034(n) as in A002034
a354861(n) = sumdigits(a002034(n)!, n); \\ Felix Fröhlich, Jun 09 2022
(Python) # uses A002034(n)
from math import factorial
from sympy.ntheory.digits import digits
def a(n): return sum(digits(factorial(A002034(n)), n)[1:])
print([a(n) for n in range(2, 76)]) # Michael S. Branicky, Jun 09 2022

Crossrefs

Cf. A000142, A002034, A354854.

Sequence in context: A345093 A079585 A354854 * A348261 A252651 A058485

Adjacent sequences: A354858 A354859 A354860 * A354862 A354863 A354864

Keyword

base,nonn

Author

Max Alekseyev, Jun 09 2022

Status

approved