A081533 - OEIS

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A081533

Sum of terms in row n of A081532.

1, 3, 7, 12, 31, 28, 127, 60, 91, 124, 2047, 168, 8191, 508, 403, 360, 131071, 546, 524287, 744, 1651, 8188, 8388607, 1170, 3751, 32764, 2821, 3048, 536870911, 2418, 2147483647, 2880, 26611, 524284, 15367, 4368, 137438953471, 2097148, 106483

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..39.

FORMULA

a(n) = sigma(A005179(n)).

CROSSREFS

Cf. A005179, A081532.

Sequence in context: A240738 A047068 A167490 * A096856 A347862 A345260

Adjacent sequences: A081530 A081531 A081532 * A081534 A081535 A081536

KEYWORD

nonn

AUTHOR

Amarnath Murthy, Mar 28 2003

EXTENSIONS

More terms from David Wasserman, Jun 07 2004

STATUS

approved