A032639 Lucky numbers indexed by the lucky numbers (Lucky numbers with lucky number subscripts).

1, 7, 21, 31, 49, 63, 87, 111, 141, 159, 189, 219, 259, 267, 339, 367, 391, 415, 427, 463, 517, 553, 601, 639, 679, 717, 801, 819, 855, 873, 925, 991, 1039, 1087, 1117, 1147, 1275, 1303, 1323, 1387, 1417, 1471, 1519, 1563, 1611, 1659, 1675, 1711, 1857

Offset: 1

Author

Patrick De Geest, May 15 1998

Keywords

• nonn

Links

• Amiram Eldar, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A000959, A006450.

Formula

a(n) = A000959(A000959(n)). - Amiram Eldar, Nov 16 2019