A247880 - cp's OEIS frontend

A247880 For bases b = 2, 3, ..., n, let the base-b expansion of n be [c_{1,b} c_{2,b} .. c_{r_b,b}], with the most significant "digit" on the left, 0 <= c_{i,b} < b, and c_{1,b} != 0; then a(n) is the number whose base-n expansion is the sum of all those expansions, regarding the c_{i,j} as integers mod n.

n	a(n)
2	2
3	7
4	25
5	44
6	75
7	106
8	584
9	885
10	1213
11	1595
12	2201
13	2758
14	3419
15	4176
16	66388
17	84490
18	106391
19	131905
20	162181
21	196924
22	236973
23	282814
24	348325
25	409728
26	478356
27	573416
28	662184
29	759951
30	868308
31	987703
32	33592007
33	39176497
34	45480263
35	52570673
36	60522786
37	69405129

[2, 7, 25, 44, 75, 106, 584, 885, 1213, 1595, 2201, 2758, 3419, 4176, 66388, 84490, 106391, 131905, 162181, 196924, 236973, 282814, 348325, 409728, 478356, 573416, 662184, 759951, 868308, 987703, 33592007, 39176497, 45480263, 52570673, 60522786, 69405129]

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