A054526 - OEIS

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A054526

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

0

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

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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

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