A378231 - cp's OEIS frontend

A378231 Deficiency of prime-shifted squares: a(n) = 2*A003961(n^2) - sigma(A003961(n^2)), where A003961 is fully multiplicative function with a(prime(i)) = prime(i+1).

n	a(n)
1	1
2	5
3	19
4	41
5	41
6	47
7	109
8	365
9	469
10	141
11	155
12	299
13	271
14	449
15	683
16	3281
17	341
18	1097
19	505
20	1041
21	1927
22	663
23	811
24	2567
25	2001
26	1211
27	11719
28	3509
29	929
30	-921
31	1331
32	29525
33	2777
34	1545
35	4277
36	6749
37	1639
38	2333
39	4933
40	9141
41	1805
42	851
43	2161
44	5235
45	16733
46	3815
47	2755
48	22979
49	13177
50	6805
51	6239
52	9671
53	3421
54	27347
55	6131
56	31049

[1, 5, 19, 41, 41, 47, 109, 365, 469, 141, 155, 299, 271, 449, 683, 3281, 341, 1097, 505, 1041, 1927, 663, 811, 2567, 2001, 1211, 11719, 3509, 929, -921, 1331, 29525, 2777, 1545, 4277, 6749, 1639, 2333, 4933, 9141, 1805, 851, 2161, 5235, 16733, 3815, 2755, 22979, 13177, 6805, 6239, 9671, 3421, 27347, 6131, 31049]

cp's OEIS Frontend

A378231 Deficiency of prime-shifted squares: a(n) = 2*A003961(n^2) - sigma(A003961(n^2)), where A003961 is fully multiplicative function with a(prime(i)) = prime(i+1).

Table of values

List of values