A054526 Triangle T(n,k): T(n,k) = phi(k) (n >= 1, 1 <= k <= n).

1, 1, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 2, 2, 4, 1, 1, 2, 2, 4, 2, 1, 1, 2, 2, 4, 2, 6, 1, 1, 2, 2, 4, 2, 6, 4, 1, 1, 2, 2, 4, 2, 6, 4, 6, 1, 1, 2, 2, 4, 2, 6, 4, 6, 4, 1, 1, 2, 2, 4, 2, 6, 4, 6, 4, 10, 1, 1, 2, 2, 4, 2, 6, 4, 6, 4, 10, 4, 1, 1, 2, 2, 4, 2, 6, 4, 6, 4, 10, 4, 12

Offset

1,6

Links

Table of n, a(n) for n=1..91.

Maple

seq(seq(phi(k), k=1..n), n=0..13); # Zerinvary Lajos, Oct 07 2007

Crossrefs

Cf. A054521.

Sequence in context: A206498 A184848 A184720 * A113453 A245851 A230596

Adjacent sequences: A054523 A054524 A054525 * A054527 A054528 A054529

Keyword

nonn,tabl

Author

N. J. A. Sloane, Apr 09 2000

Status

approved