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A061500
Integer part of arithmetic mean of distinct nonzero numbers that can be formed from the digits of n.
2
1, 2, 3, 4, 5, 6, 7, 8, 9, 5, 6, 9, 12, 15, 18, 21, 24, 27, 30, 11, 9, 12, 15, 18, 21, 24, 27, 30, 33, 16, 12, 15, 18, 21, 24, 27, 30, 33, 36, 22, 15, 18, 21, 24, 27, 30, 33, 36, 39, 27, 18, 21, 24, 27, 30, 33, 36, 39, 42, 33, 21, 24, 27, 30, 33, 36, 39, 42, 45, 38, 24, 27, 30, 33, 36, 39
OFFSET
1,2
REFERENCES
Amarnath Murthy, An Interesting result in Combinatorics, Mathematics and Informatics Quarterly, 3/99, vol. 9, Bulgaria.
EXAMPLE
a(10) = floor(1+10)/2 =5. a(12) = 9: the distinct numbers formed by the digits of 12 are 1, 2, 12, 21. The arithmetic mean of these numbers is 36/4 = 9.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, May 06 2001
EXTENSIONS
Corrected and extended by Asher Auel, May 14, 2001
Name corrected by Sean A. Irvine, Feb 18 2023
STATUS
approved