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A102821 Numbers n for which the square excess of n-th prime is prime. +0
4
2, 4, 5, 8, 9, 13, 14, 15, 19, 20, 23, 27, 28, 30, 35, 36, 37, 38, 39, 46, 49, 56, 57, 67, 68, 69, 71, 81, 83, 86, 93, 94, 96, 98, 107, 108, 109, 111, 112, 113, 114, 124, 128, 138, 139, 142, 144, 155, 156, 157, 158, 159, 160, 161, 162, 173, 178, 182, 192, 195, 196, 199 (list; graph; listen)
OFFSET

0,1

EXAMPLE

7 - 2^2 = 3 is the square excess (see A056892) of 7 and it is prime. 7 is the 4th prime, so 4 is in the sequence.

CROSSREFS

Cf. A056892.

Sequence in context: A099628 A137169 A002541 this_sequence A101881 A143989 A064573

Adjacent sequences: A102818 A102819 A102820 this_sequence A102822 A102823 A102824

KEYWORD

easy,nonn

AUTHOR

Olaf Voss (richyfourtythree(AT)yahoo.com), Feb 27 2005

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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