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Search: id:A054461
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| A054461 |
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Primes of the form (n+1)^n + n^(n-1), n >= 2. |
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+0
1
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| 11, 73, 45143873, 1043046721, 1182114430632237601, 49814113380273715457
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Sum of reciprocals = 0.1046077441562072936197025883... Next term for n=19 is too large for the database.
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PROGRAM
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(PARI) xp1toxm1(n)= { forstep(x=2, n, 1, y=(x+1)^x + x^(x-1); if(isprime(y), print1(y" ")) ) }
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CROSSREFS
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Sequence in context: A163775 A092244 A155634 this_sequence A003367 A121784 A044198
Adjacent sequences: A054458 A054459 A054460 this_sequence A054462 A054463 A054464
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KEYWORD
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nonn
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AUTHOR
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Cino Hilliard (hillcino368(AT)gmail.com), Aug 30 2003
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