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A397177
a(n) = n - A394611(n).
1
1, 2, 2, 2, 3, 2, 4, 4, 3, 4, 3, 5, 7, 4, 4, 10, 5, 5, 9, 5, 13, 8, 5, 10, 5, 10, 8, 15, 16, 15, 14, 11, 7, 16, 13, 14, 13, 11, 17, 14, 11, 14, 6, 24, 19, 10, 20, 21, 20, 21, 20, 22, 13, 18, 20, 18, 26, 25, 15, 17, 24, 15, 30, 18, 21, 18, 21, 20, 19, 19, 28, 27, 35, 39, 29, 21, 32, 35, 30, 19, 32, 19, 31, 28, 26, 28, 28, 27, 32, 26, 28
OFFSET
1,2
LINKS
PROG
(Python)
from collections import Counter
from itertools import count, islice
def A397177_gen(): # generator of terms
alst, an, c = [], 0, Counter()
for n in count(1):
an = c[an]
yield n - an
c.update(an+ai for ai in alst)
alst.append(an)
print(list(islice(A397177_gen(), 91))) # Michael S. Branicky, Jul 01 2026
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jun 30 2026
STATUS
approved