A177888 - cp's OEIS frontend

A177888 P_n(k) with P_0(z) = z+1 and P_n(z) = z + P_(n-1)(z)*(P_(n-1)(z)-z) for n>1; square array P_n(k), n>=0, k>=0, read by antidiagonals.

n	a(n)
0	1
1	2
2	1
3	3
4	3
5	1
6	4
7	5
8	7
9	1
10	5
11	7
12	17
13	43
14	1
15	6
16	9
17	31
18	257
19	1807
20	1
21	7
22	11
23	49
24	871
25	65537
26	3263443
27	1
28	8
29	13
30	71
31	2209
32	756031
33	4294967297
34	10650056950807
35	1
36	9
37	15
38	97
39	4691
40	4870849
41	571580604871
42	18446744073709551617
43	113423713055421844361000443
44	1

[1, 2, 1, 3, 3, 1, 4, 5, 7, 1, 5, 7, 17, 43, 1, 6, 9, 31, 257, 1807, 1, 7, 11, 49, 871, 65537, 3263443, 1, 8, 13, 71, 2209, 756031, 4294967297, 10650056950807, 1, 9, 15, 97, 4691, 4870849, 571580604871, 18446744073709551617, 113423713055421844361000443, 1]

cp's OEIS Frontend

A177888 P_n(k) with P_0(z) = z+1 and P_n(z) = z + P_(n-1)(z)*(P_(n-1)(z)-z) for n>1; square array P_n(k), n>=0, k>=0, read by antidiagonals.

Table of values

List of values