A394332 Fourth column of A394328.

0, 0, 0, 0, 0, 0, 0, 3, 3, 2, 2, 1, 1, 0, 7, 6, 5, 4, 3, 2, 1, 10, 9, 7, 6, 4, 3, 1, 14, 12, 10, 8, 6, 4, 2, 17, 15, 12, 10, 7, 5, 2, 21, 18, 15, 12, 9, 6, 3, 48, 45, 40, 37, 32, 29, 24, 49, 44, 40, 35, 31, 26, 22, 48, 44, 38, 34, 28, 24, 18, 49, 43, 38, 32, 27

Offset

0,8

Links

Table of n, a(n) for n=0..74.

Formula

a(7^k) = floor((k*(7^k-1)+1)/2) = floor(A395463(k)/2).

Property (non-increasing septuplets): a(m*7^k) >= a(m*7^k + 7^(k-1)) >= a(m*7^k + 2*7^(k-1)) >= a(m*7^k + 3*7^(k-1)) >= a(m*7^k + 4*7^(k-1)) >= a(m*7^k + 5*7^(k-1)) >= a(m*7^k + 6*7^(k-1)).

Crossrefs

Cf. A394328, A395463.

Sequence in context: A309119 A308725 A202691 * A374410 A328143 A278402

Adjacent sequences: A394329 A394330 A394331 * A394333 A394334 A394335

Keyword

nonn

Author

A.H.M. Smeets, Apr 23 2026

Status

approved