1,1

Writing (prime(i))^j as i:j, we have the following table:

Primal Functions and Functional Digraphs for a(1) to a(15)

0756 = 1:2 2:3 4:1 || 4 -> 1 -> 2 -> 3

1176 = 1:3 2:1 4:2 || 4 -> 2 -> 1 -> 3

1188 = 1:2 2:3 5:1 || 5 -> 1 -> 2 -> 3

1200 = 1:4 2:1 3:2 || 3 -> 2 -> 1 -> 4

1400 = 1:3 3:2 4:1 || 4 -> 1 -> 3 -> 2

1404 = 1:2 2:3 6:1 || 6 -> 1 -> 2 -> 3

1620 = 1:2 2:4 3:1 || 3 -> 1 -> 2 -> 4

1836 = 1:2 2:3 7:1 || 7 -> 1 -> 2 -> 3

2052 = 1:2 2:3 8:1 || 8 -> 1 -> 2 -> 3

2160 = 1:4 2:3 3:1 || 2 -> 3 -> 1 -> 4

2200 = 1:3 3:2 5:1 || 5 -> 1 -> 3 -> 2

2400 = 1:5 2:1 3:2 || 3 -> 2 -> 1 -> 5

2484 = 1:2 2:3 9:1 || 9 -> 1 -> 2 -> 3

2600 = 1:3 3:2 6:1 || 6 -> 1 -> 3 -> 2

2904 = 1:3 2:1 5:2 || 5 -> 2 -> 1 -> 3

Cf. A108352, A108353, A108370, A108371, A108372, A108373.

Sequence in context: A129036 A020391 A092449 this_sequence A158657 A004010 A018898

Adjacent sequences: A108371 A108372 A108373 this_sequence A108375 A108376 A108377

nonn

Jon Awbrey (jawbrey(AT)att.net), Jun 16 2005, extended Jul 10 2005