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A096856 a(n)=A062402[1+2^n]. 3
3, 7, 12, 31, 42, 124, 224, 511, 847, 1953, 2688, 12264, 18816, 29127, 72540, 131071, 195048, 558523, 1077440, 3164112, 4552020, 10890040, 10342080, 54525848, 73260781, 155671040, 318848400, 1080311232, 964580240, 3070642080 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
Table[DivisorSigma[1, EulerPhi[1+2^w]], {w, 1, 30}]
CROSSREFS
Sequence in context: A047068 A167490 A081533 * A347862 A345260 A108154
KEYWORD
nonn
AUTHOR
Labos Elemer, Jul 19 2004
STATUS
approved

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Last modified March 28 04:13 EDT 2024. Contains 371235 sequences. (Running on oeis4.)