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A067826 Primes n such that sigma(2n+1)>3(n+1). 0
31, 37, 67, 73, 97, 127, 157, 199, 229, 241, 277, 283, 307, 313, 331, 337, 367, 379, 397, 409, 457, 487, 499, 547, 577, 607, 619, 643, 661, 727, 757, 769, 787, 823, 829, 877, 907, 937, 967, 997, 1039, 1087, 1117, 1123, 1237, 1249, 1291, 1297, 1327, 1447 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Equivalently sequence gives primes in A053224(k)/2 when AO53224(k) is even

CROSSREFS

Cf. A053224.

Sequence in context: A097437 A156974 A082957 * A107013 A107012 A170853

Adjacent sequences:  A067823 A067824 A067825 * A067827 A067828 A067829

KEYWORD

nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 08 2002

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Last modified February 14 22:52 EST 2012. Contains 205685 sequences.