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URL: https://oeis.org/A229242

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A229242
Generalized Markoff numbers: union of numbers a, b, c, d, e satisfying the Markoff(5) equation a^2 + b^2 + c^2 + d^2 + e^2 = 5*a*b*c*d*e.
2
1, 4, 19, 91, 379, 436, 2089, 7561, 8644, 10009, 36001, 47956, 144019, 150841, 198379, 229771, 821089, 1100899, 3009259, 3419716, 3933001, 4554019, 5274724, 14328091, 25272721, 54726841, 57312379, 60034339, 68221876, 74727379, 77994811, 90262009, 104544004
OFFSET
1,2
EXAMPLE
a(1)=1 since (1, 1, 1, 1, 1) is a solution to a^2 + b^2 + c^2 + d^2 + e^2 = 5*a*b*c*d*e. a(2)=4 since (4, 1, 1, 1, 1) is a solution. a(3)=19 since (19,4,1,1,1) is a solution. a(n) is the n-th leading term (that is a's) among all the solutions with a >= b >= c >= d >= e.
CROSSREFS
Sequence in context: A181880 A291016 A010907 * A087449 A004253 A218988
KEYWORD
nonn
AUTHOR
Shanzhen Gao, Sep 17 2013
STATUS
approved