A031887 Lucky numbers with size of gaps equal to 4 (upper terms).

7, 13, 25, 37, 67, 73, 79, 115, 133, 163, 193, 205, 223, 235, 241, 289, 307, 331, 361, 433, 487, 541, 583, 619, 643, 655, 727, 739, 745, 781, 805, 823, 931, 937, 961, 979, 997, 1057, 1105, 1183, 1201, 1249, 1285, 1369, 1459, 1495, 1501, 1567

Offset

1,1

Links

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

Crossrefs

Cf. A000959.

Sequence in context: A255653 A362632 A200270 * A294943 A363080 A111721

Adjacent sequences: A031884 A031885 A031886 * A031888 A031889 A031890

Keyword

nonn

Author

Patrick De Geest

Status

approved