login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A132838
Largest integer terms forming a self-convolution 4th root of a sequence (A132837) such that: A132837(n) <= 4*A132837(n-1) for n>0 with A132837(0)=1.
1
1, 1, 2, 7, 22, 78, 273, 984, 3573, 13138, 48670, 181625, 681630, 2570979, 9738171, 37021873, 141199583, 540058408, 2070814185, 7958280782, 30646175351, 118230058466, 456879024997, 1768206394844, 6852795439360, 26592367534410
OFFSET
0,3
CROSSREFS
Cf. A132837 (fourth power).
Sequence in context: A119975 A106188 A176612 * A047095 A110137 A097967
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Sep 10 2007
STATUS
approved