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A115625 Number of partitions of {1,...,n} into block sizes a power of 2. 2
1, 1, 2, 4, 11, 31, 106, 372, 1500, 6220, 28696, 136016, 702802, 3727946, 21253324, 124231096, 772458367, 4918962479, 33061095118, 227303570524, 1639389365201, 12082068856285, 92951844299150, 729991789222972, 5960617085224012 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

FORMULA

E.g.f.: exp(x+x^2/2+x^4/4!+x^8/8!+x^16/16!+...).

CROSSREFS

Cf. A018819, A115626.

Sequence in context: A148169 A110140 A190452 * A056323 A081557 A154603

Adjacent sequences:  A115622 A115623 A115624 * A115626 A115627 A115628

KEYWORD

nonn

AUTHOR

Christian G. Bower (bowerc(AT)usa.net), Jan 26 2006

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Last modified February 14 00:47 EST 2012. Contains 205567 sequences.