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A051131
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Prime Bell numbers (A000110).
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2
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OFFSET
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1,1
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REFERENCES
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Bell, E. T. "Exponential Numbers." Amer. Math. Monthly 41, 411-419, 1934.
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LINKS
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Table of n, a(n) for n=1..6.
Eric Weisstein's World of Mathematics, Bell Numbers
Eric Weisstein's World of Mathematics, Bell Number
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EXAMPLE
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Bell(2)=2 and Bell(3)=5 are primes, Bell(4)..Bell(6) are composite, Bell(7)=877 is prime.
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CROSSREFS
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Cf. A000110, A051130.
Sequence in context: A208212 A176117 A078748 * A119748 A101341 A079014
Adjacent sequences: A051128 A051129 A051130 * A051132 A051133 A051134
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KEYWORD
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nonn
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AUTHOR
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Ignacio Larrosa Canestro (ignacio.larrosa(AT)eresmas.net)
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EXTENSIONS
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The next term is too large to include. See A051130.
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STATUS
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approved
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