A394330 Second column of A394328.

0, 0, 0, 1, 1, 0, 2, 2, 1, 8, 7, 4, 9, 6, 4, 8, 6, 2, 18, 14, 10, 16, 12, 7, 15, 10, 5, 39, 34, 26, 36, 28, 22, 30, 24, 15, 45, 36, 28, 38, 30, 20, 33, 23, 14, 48, 39, 27, 42, 30, 20, 33, 23, 10, 81, 68, 55, 70, 57, 43, 60, 46, 32, 80, 66, 50, 69, 53, 38, 56, 41

Offset

0,7

Links

Table of n, a(n) for n=0..70.

Formula

a(3^k) = floor((k*(3^k-1)+1)/2) = floor(A394342(k)/2).

Property (non-increasing triplets): a(m*3^k) >= a(m*3^k + 3^(k-1)) >= a(m*3^k + 2*3^(k-1)).

Crossrefs

Cf. A394328, A394342.

Sequence in context: A339262 A198569 A135080 * A348724 A238182 A117260

Adjacent sequences: A394327 A394328 A394329 * A394331 A394332 A394333

Keyword

nonn

Author

A.H.M. Smeets, Mar 17 2026

Status

approved