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A376185
a(n) = denominator of the sum S(n) defined in A376062.
2
12, 48, 624, 97968, 2399530224, 1439436326371902768, 517994234419759747473589427583418224, 67079506723028253472357256785558488997471406450171845011442457607246768
OFFSET
1,1
LINKS
N. J. A. Sloane, A Nasty Surprise in a Sequence and Other OEIS Stories, Experimental Mathematics Seminar, Rutgers University, Oct 10 2024, Youtube video; Slides [Mentions this sequence]
FORMULA
1/a(n) = 1/a(n-1) - 1/(4*A376062(n)) for n >= 2.
EXAMPLE
The initial values of S(n) are 7/12, 43/48, 619/624, 97963/97968, 2399530219/2399530224, 1439436326371902763/1439436326371902768 ...
KEYWORD
nonn,frac,changed
AUTHOR
N. J. A. Sloane, Sep 15 2024.
STATUS
approved