A116052 Numbers k such that k + sigma(k) + sigma(sigma(k)) is a brilliant number (A078972).
2, 3, 57, 63, 64, 83, 85, 91, 98, 133, 141, 145, 149, 154, 156, 187, 189, 232, 247, 249, 255, 263, 279, 281, 293, 310, 319, 415, 419, 425, 467, 512, 575, 589, 593, 653, 791, 799, 813, 837, 839, 970, 1019, 1103, 1113, 1145, 1247, 1259, 1427, 2183, 2223
Offset: 1
Examples
1103 is in the sequence since 1103 + sigma(1103) + sigma(sigma(1103)) = 71*73 (a brilliant number).