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A036288 n = Product (p_j^k_j) => a(n) = 1 + Sum (p_j * k_j). +0
2
1, 3, 4, 5, 6, 6, 8, 7, 7, 8, 12, 8, 14, 10, 9, 9, 18, 9, 20, 10, 11, 14, 24, 10, 11, 16, 10, 12, 30, 11, 32, 11, 15, 20, 13, 11, 38, 22, 17, 12, 42, 13, 44, 16, 12, 26, 48, 12, 15, 13, 21, 18, 54, 12, 17, 14, 23, 32, 60, 13, 62, 34, 14, 13, 19, 17, 68, 22 (list; graph; listen)
OFFSET

0,2

REFERENCES

R. Honsberger, Mathematical Morsels, MAA, 1978, p. 223.

EXAMPLE

12=2^2*3 so a(12)=1+2^2+3=8.

CROSSREFS

A001414 + 1.

Sequence in context: A133575 A104136 A159624 this_sequence A159077 A049267 A111608

Adjacent sequences: A036285 A036286 A036287 this_sequence A036289 A036290 A036291

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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