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A113759 Triangle read by rows: First row is special; for n > 1, n-th row consists of sum of first k odd primes for some k equal to a perfect power. +0
1
1, 1, 3, 1, 3, 5, 1, 3, 5, 7, 1, 3, 5, 7, 11, 1, 3, 5, 7, 11, 37, 1, 3, 5, 7, 11, 37, 67, 1, 3, 5, 7, 11, 37, 67, 131 (list; table; graph; listen)
OFFSET

1,3

EXAMPLE

Triangle begins:

1

1 3

1 3 5

1 3 5 7

1 3 5 7 11

1 3 5 7 11 31

1 3 5 7 11 31 67

1 3 5 7 11 31 67 131

CROSSREFS

Cf. A113495.

Sequence in context: A118125 A143732 A130465 this_sequence A134231 A126637 A110091

Adjacent sequences: A113756 A113757 A113758 this_sequence A113760 A113761 A113762

KEYWORD

easy,nonn,tabl,obsc,uned

AUTHOR

Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Jan 18 2006

page 1

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.


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