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A275671
Even values produced by the sigma function A000203, in increasing order.
0
4, 6, 8, 12, 14, 18, 20, 24, 28, 30, 32, 36, 38, 40, 42, 44, 48, 54, 56, 60, 62, 68, 72, 74, 78, 80, 84, 90, 96, 98, 102, 104, 108, 110, 112, 114, 120, 124, 126, 128, 132, 138, 140, 144, 150, 152, 156, 158, 160, 162, 164, 168, 174, 176, 180, 182, 186, 192, 194
OFFSET
1,1
COMMENTS
Even terms of A002191.
Complement of A060657 with respect to A002191.
EXAMPLE
8 is in the sequence because sigma(7) = 8 and it's an even number.
PROG
(Magma) Set(Sort([SumOfDivisors(n): n in[1..1000] | not IsOdd(SumOfDivisors(n)) and SumOfDivisors(n) le 1000]))
CROSSREFS
KEYWORD
nonn
AUTHOR
Jaroslav Krizek, Aug 04 2016
STATUS
approved