A077810 Sum of divisors of numbers containing in their decimal representation only the digits 0 and 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

Links

Table of n, a(n) for n=1..40.

Formula

a(n) = A000203(A007088(n)).

Example

a(6) = A000203(A007088(6)) = A000203(110) = 1+2+5+10+11+22+55+110 = 216.

Crossrefs

Cf. A000203, A007088, A077809.

Sequence in context: A033668 A030239 A040308 * A232505 A297939 A298550

Adjacent sequences: A077807 A077808 A077809 * A077811 A077812 A077813

Keyword

nonn,base

Author

Reinhard Zumkeller, Nov 16 2002

Status

approved