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A053225
First differences of sigma(n) that are positive.
3
2, 1, 3, 6, 7, 5, 16, 10, 7, 21, 22, 4, 36, 11, 16, 42, 31, 6, 43, 22, 34, 54, 40, 76, 36, 26, 66, 48, 10, 108, 34, 8, 23, 60, 58, 48, 123, 40, 10, 16, 72, 106, 5, 140, 24, 60, 144, 56, 16, 132, 73, 61, 114, 106, 172, 106, 96, 126, 66, 216, 53, 56, 156, 127, 76, 204, 44, 36
OFFSET
1,1
FORMULA
a(n) = A053222(A053224(n))
MAPLE
with (numtheory): seq( `if`((sigma(i) < sigma(i+1)), (sigma(i+1)-sigma(i)), print( )), i=1..139);
CROSSREFS
KEYWORD
nonn
AUTHOR
Asher Auel, Jan 06 2000
STATUS
approved