A091342 - cp's OEIS frontend

A091342 Given (1) f(h,j,a) = ( [ ((a/gcd(a,h)) / gcd(j+1,(a/gcd(a,h)))) * (h(j+1)) ] - [ ((a/gcd(a,h)) / gcd(j+1,(a/gcd(a,h)))) * (ja) ] ) / a then let (2) a(h) = d(h,j) = lcm( f(h,j,1) ... f(h,j,h) ).

n	a(n)
1	1
2	3
3	10
4	105
5	252
6	2310
7	25740
8	45045
9	680680
10	11639628
11	10581480
12	223092870
13	1029659400
14	2868336900
15	77636318760
16	4512611027925
17	4247163320400
18	4011209802600
19	140603459396400
20	133573286426580
21	5215718803323600

[1, 3, 10, 105, 252, 2310, 25740, 45045, 680680, 11639628, 10581480, 223092870, 1029659400, 2868336900, 77636318760, 4512611027925, 4247163320400, 4011209802600, 140603459396400, 133573286426580, 5215718803323600]

cp's OEIS Frontend

A091342 Given (1) f(h,j,a) = ( [ ((a/gcd(a,h)) / gcd(j+1,(a/gcd(a,h)))) * (h(j+1)) ] - [ ((a/gcd(a,h)) / gcd(j+1,(a/gcd(a,h)))) * (ja) ] ) / a then let (2) a(h) = d(h,j) = lcm( f(h,j,1) ... f(h,j,h) ).

Table of values

List of values