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A335700
A variant of A000179 and A102761.
4
1, 0, 0, 1, 2, 13, 80, 579, 4738, 43387, 439792, 4890741, 59216642, 775596313, 10927434464, 164806435783, 2649391469058, 45226435601207, 817056406224416, 15574618910994665, 312400218671253762, 6577618644576902053, 145051250421230224304, 3343382818203784146955, 80399425364623070680706, 2013619745874493923699123
OFFSET
0,5
REFERENCES
William Orrick, Postings to Sequence Fans Mailing List, August 2020
CROSSREFS
A000179, A102761, and the present sequence are all essentially the same sequence but with different conventions for the initial terms a(0) and a(1).
Sequence in context: A179237 A216316 A000179 * A246383 A189087 A037739
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Aug 06 2020
STATUS
approved