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A077810
Sum of divisors of numbers containing in their decimal representation only the digits 0 and 1.
1
1, 18, 12, 217, 102, 216, 152, 2340, 1344, 1836, 1352, 2604, 1472, 2736, 1224, 24211, 10212, 24192, 13824, 22134, 17024, 24336, 10112, 28080, 15520, 26496, 14896, 32984, 11772, 22032, 11424, 246078, 109104, 183816, 147744, 291648, 135904, 248832, 115200, 238680
OFFSET
1,2
FORMULA
a(n) = A000203(A007088(n)).
EXAMPLE
a(6) = A000203(A007088(6)) = A000203(110) = 1+2+5+10+11+22+55+110 = 216.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Reinhard Zumkeller, Nov 16 2002
STATUS
approved