A072672 - OEIS

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A072672

Prime(n)*prime(2*n)+prime(n)+prime(2*n).

11, 31, 83, 159, 359, 531, 791, 1079, 1487, 2159, 2559, 3419, 4283, 4751, 5471, 7127, 8399, 9423, 11151, 12527, 13467, 15519, 16799, 20159, 22539, 24479, 26207, 28511, 29919, 32147, 37631, 41183, 43883, 47319, 52499, 54719, 59091, 62975, 66863

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..39.

EXAMPLE

a(10) = A000040(10)*A000040(20)+A000040(10)+A000040(20) = 29*71+29+71 = 2159.

CROSSREFS

Cf. A072668, A072673.

Sequence in context: A054757 A038768 A269789 * A072673 A250461 A259508

Adjacent sequences: A072669 A072670 A072671 * A072673 A072674 A072675

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Jun 30 2002

STATUS

approved