A259745 - cp's OEIS frontend

A259745 Triangular numbers representable as x*y+x+y such that x and y are triangular numbers, x>=y>0.

n	a(n)
1	3
2	15
3	21
4	91
5	120
6	153
7	351
8	406
9	703
10	741
11	1891
12	3081
13	3403
14	4465
15	5151
16	5565
17	6555
18	9453
19	9591
20	18721
21	22791
22	23871
23	38226
24	39903
25	46056
26	52326
27	79401
28	85491
29	91378
30	104653
31	159895
32	187578
33	207690
34	222111
35	227475
36	229503
37	266815
38	274911
39	280875
40	326028
41	334971
42	354903

[3, 15, 21, 91, 120, 153, 351, 406, 703, 741, 1891, 3081, 3403, 4465, 5151, 5565, 6555, 9453, 9591, 18721, 22791, 23871, 38226, 39903, 46056, 52326, 79401, 85491, 91378, 104653, 159895, 187578, 207690, 222111, 227475, 229503, 266815, 274911, 280875, 326028, 334971, 354903]

cp's OEIS Frontend

A259745 Triangular numbers representable as x*y+x+y such that x and y are triangular numbers, x>=y>0.

Table of values

List of values