A180470 a(n) = -prime(n) + prime(n + prime(n)) - 1.

2, 7, 13, 23, 41, 53, 71, 83, 107, 137, 149, 189, 209, 225, 245, 293, 323, 339, 375, 395, 417, 467, 493, 527, 575, 607, 629, 653, 677, 709, 801, 835, 875, 891, 947, 965, 1023, 1065, 1109, 1129, 1193, 1227, 1289, 1295, 1333, 1353, 1415, 1517, 1555, 1571, 1627

Offset

1,1

Links

Table of n, a(n) for n=1..51.

Mathematica

Table[ -Prime[n] + Prime[n + Prime[n]] - 1, {n, 1, 100}]

Crossrefs

Sequence in context: A185724 A366983 A045377 * A237443 A182415 A275491

Adjacent sequences: A180467 A180468 A180469 * A180471 A180472 A180473

Keyword

easy,nonn

Author

Frank Wals (frank.wals(AT)gmail.com), Sep 06 2010

Status

approved