A249416 - cp's OEIS frontend

A249416 a(n) = core(Sum_{i=0,...,n} core(binomial(n,i))), where core(n) = A007913(n).

n	a(n)
0	1
1	2
2	1
3	2
4	10
5	2
6	1
7	2
8	118
9	19
10	519
11	2
12	635
13	370
14	829
15	1333
16	8454
17	17315
18	3599
19	15307
20	423769
21	852006
22	495431
23	2
24	2425755
25	2121070
26	3192295
27	1614598
28	35685686
29	10081687
30	735961
31	12902173
32	216093318
33	151123623
34	5270424935
35	39937013
36	22884337
37	7281379334

[1, 2, 1, 2, 10, 2, 1, 2, 118, 19, 519, 2, 635, 370, 829, 1333, 8454, 17315, 3599, 15307, 423769, 852006, 495431, 2, 2425755, 2121070, 3192295, 1614598, 35685686, 10081687, 735961, 12902173, 216093318, 151123623, 5270424935, 39937013, 22884337, 7281379334]

cp's OEIS Frontend

A249416 a(n) = core(Sum_{i=0,...,n} core(binomial(n,i))), where core(n) = A007913(n).

Table of values

List of values