A382169 A382168 with duplicates removed.

0, 1, 7, 17, 38, 74, 119, 185, 263, 368, 504, 657, 847, 1078, 1331, 1631, 1956, 2334, 2769, 3234, 3762, 4323, 4953, 5656, 6397, 7217, 8120, 9066, 10101, 11182, 12358, 13633, 14959, 16390, 17930, 19526, 21237, 23007, 24898, 26914, 28994, 31205, 33483, 35898

Offset: 1

Author

N. J. A. Sloane, Mar 31 2025

Keywords

• nonn

Comments

Is there any other characterization of these numbers?

First differences are triangular numbers whose indices (in A000217) are 1,3,4,6,8,9,11,12,14,16,17,19,21,22,24,25,27,29,30,32,33,35,37,38,40,42. - Ivan N. Ianakiev, Apr 01 2025

Crossrefs

Cf. A000217, A019444, A382168.

Extensions

More terms from Pontus von Brömssen, Apr 01 2025