OFFSET
1,1
COMMENTS
All of the entries are odd.
Subsequence of A016921. - Michel Marcus, Sep 03 2013
In general, the set of numbers with sum of base-b digits equal to b is a subset of { (b-1)*k + 1; k = 2, 3, 4, ... }. - M. F. Hasler, Dec 23 2016
LINKS
Michael S. Branicky, Table of n, a(n) for n = 1..10000
EXAMPLE
The 7-ary expansion of 13 is (1,6), which has sum of digits 7.
The 7-ary expansion of 103 is (2,0,5), which has sum of digits 7.
10 is not on the list since the 7-ary expansion of 10 is (1,3), which has sum of digits 4 not 7.
MATHEMATICA
Select[Range[600], Total[IntegerDigits[#, 7]]==7&] (* Harvey P. Dale, Aug 18 2014 *)
PROG
(Sage) [i for i in [0..1000] if sum(Integer(i).digits(base=7))==7]
(PARI) select( is(n)=sumdigits(n, 7)==7, [1..999]) \\ M. F. Hasler, Dec 23 2016
(Python)
agen = A226636gen(sod=7, base=7) # generator of terms using code in A226636
print([next(agen) for n in range(1, 55)]) # Michael S. Branicky, Jul 10 2022
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Tom Edgar, Sep 01 2013
STATUS
approved