[seqfan] Divisibilty sequences

[Richard Guy]

Towards a multiplicative theory of divisibility sequences.

A001542 = 2 * (A001109)
A003690 = 3 * (A004254)^2
A003696 = (A001353) * (b=14,c=68)  latter not in OEIS?
A003733 = 5 * (A143699)^2
A003739 = 5 * (A001906) * (A006238)
A003745 = 3 * 5^2 * (A004254) * (A004187)^3
A003751 = 5^3 * (A004187)^4
A003753 = 2^2 * (A001109) * (A001353)^2
         = 2 * (A001542) * (A001353)^2
A003755 = (A001109) * (A001906)^2
A003761 = (A001906) * (A004254) * (A001109)
A003767 = 2^3 * (A001353) * (A001109)^2
A003773 = 2 * (A001542)^3 = 2^4 * (A001109)^3
A092136 = (A004187) * (A001906)^3

E&OE     R,