cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A069673 Nonpalindromic triangular numbers whose digit reversal is also a triangular number (possibly with fewer digits).

Table of values

n a(n)
1 10
2 120
3 153
4 190
5 300
6 351
7 630
8 820
9 17578
10 87571
11 156520
12 180300
13 185745
14 547581
15 557040
16 678030
17 1461195
18 1851850
19 5911641
20 6056940
21 12145056
22 12517506
23 16678200
24 56440000
25 60571521
26 65054121
27 157433640
28 188267310
29 304119453
30 354911403
31 1261250200

List of values

[10, 120, 153, 190, 300, 351, 630, 820, 17578, 87571, 156520, 180300, 185745, 547581, 557040, 678030, 1461195, 1851850, 5911641, 6056940, 12145056, 12517506, 16678200, 56440000, 60571521, 65054121, 157433640, 188267310, 304119453, 354911403, 1261250200]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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