A382169 - OEIS

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

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OFFSET

1,3

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

LINKS

Table of n, a(n) for n=1..44.

CROSSREFS

Cf. A000217, A019444, A382168.

Sequence in context: A273947 A140121 A102770 * A253663 A298369 A213789

Adjacent sequences: A382166 A382167 A382168 * A382170 A382171 A382172

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Mar 31 2025

EXTENSIONS

More terms from Pontus von Brömssen, Apr 01 2025

STATUS

approved