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A348044
The nearest common ancestor of n and n^2 in the Doudna tree (A005940).
4
1, 2, 2, 4, 2, 2, 2, 8, 4, 2, 2, 2, 2, 2, 2, 16, 2, 4, 2, 2, 2, 2, 2, 2, 4, 2, 8, 2, 2, 2, 2, 32, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 4, 4, 2, 2, 2, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 64, 2, 2, 2, 2, 2, 2, 2, 4, 2, 2, 4, 2, 2, 2, 2, 2, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 4, 2, 4, 2, 2, 2, 2, 2
OFFSET
1,2
FORMULA
a(n) = A348041(n, n^2) = A348042(n, n) = A348043(n, n).
PROG
(PARI) A348044(n) = A348041sq(n, n*n); \\ Uses also code from A348041.
CROSSREFS
Main diagonal of A348042 and A348043.
Cf. A102750 (the positions of 2's).
Sequence in context: A215847 A360460 A057000 * A328400 A239676 A295639
KEYWORD
nonn
AUTHOR
Antti Karttunen, Sep 27 2021
STATUS
approved