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A139239
First differences of Mersenne numbers A001348, divided by 2.
5
2, 12, 48, 960, 3072, 61440, 196608, 3932160, 264241152, 805306368, 67645734912, 1030792151040, 3298534883328, 65970697666560, 4433230883192832, 283726776524341248, 864691128455135232, 72634054790231359488, 1106804644422573096960, 3541774862152233910272, 297509088420787648462848
OFFSET
1,1
LINKS
FORMULA
a(n) = A139238(n)/2.
MATHEMATICA
Differences[2^Prime[Range[25]]-1]/2 (* Paolo Xausa, Oct 20 2023 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Omar E. Pol, Apr 19 2008
EXTENSIONS
a(10)-a(21) from Paolo Xausa, Oct 20 2023
STATUS
approved